The International Commercial Ship Buyer’s & Operator’s Guide

Revenue First

A commercial vessel exists to perform a job.

That might be:

• carrying containers;
• moving crude oil;
• transporting vehicles;
• carrying passengers;
• supporting offshore operations;
• moving dry bulk;
• transporting gas;
• laying cables;
• towing;
• dredging;
• or performing specialist marine work.

Before examining ships for sale, define the business.

Understand how the vessel will earn revenue.

This could involve:

• voyage charter;
• time charter;
• bareboat charter;
• liner service;
• contract of affreightment;
• passenger fares;
• offshore contract;
• government contract;
• or direct operation by the owner.

Different revenue models create different risks.

A ship trading on the spot market may benefit when freight rates rise.

It can also suffer when rates collapse.

A vessel operating under a longer-term charter may provide more predictable revenue.

But it may miss market upside.

The ship and the commercial strategy must fit together.

Shipping markets are cyclical.

A vessel purchased at the top of a freight market may:

• cost more;
• generate strong initial revenue;
• and then enter a weaker market carrying substantial debt.

Consider the cycle.

Define:

• cargo;
• route;
• ports;
• voyage distance;
• canal requirements;
• seasonal restrictions;
• weather;
• loading facilities;
• and expected utilisation.

This immediately eliminates unsuitable vessels.

Check:

• length;
• beam;
• draught;
• air draught;
• berth;
• turning basin;
• terminal restrictions;
• loading equipment;
• and shore infrastructure.

A ship that cannot access the intended terminal has no commercial value on that route.

Buying the Vessel

Ownership provides:

• control;
• potential capital appreciation;
• operating flexibility;
• and exposure to the vessel's residual value.

It also creates:

• capital requirement;
• depreciation risk;
• technical risk;
• and market exposure.

Under a time charter, the charterer generally hires the vessel for an agreed period while the owner retains responsibility for many aspects of vessel operation.

Exact responsibilities depend on the charterparty.

This can provide access to tonnage without buying the asset.

A voyage charter generally involves the carriage of cargo between agreed locations for an agreed freight arrangement.

The shipowner retains substantial operational responsibility.

Under a bareboat or demise charter, the charterer takes much greater responsibility for the vessel.

Depending on the agreement, this may include:

• crewing;
• operation;
• maintenance;
• and insurance.

It can resemble temporary ownership operationally.

A COA may involve transporting an agreed quantity of cargo over a period rather than hiring one specific vessel for the entire arrangement.

This can provide flexibility in fleet utilisation.

There is no universal answer.

Ownership may suit:

• long-term fleet strategy;
• stable cargo demand;
• specialist vessels;
• and operators wanting asset control.

Chartering may suit:

• uncertain demand;
• temporary routes;
• market testing;
• and businesses seeking lower capital commitment.

Age

Age affects:

• price;
• maintenance;
• finance;
• insurance;
• class;
• emissions performance;
• and remaining commercial life.

Older does not automatically mean poor value.

But cheap older tonnage requires careful analysis.

Ask:

How many commercially useful years remain?

Do not ask only:

How many years can the ship physically survive?

A ship can remain seaworthy while becoming commercially obsolete.

Deadweight tonnage represents the weight the vessel can carry including items such as:

• cargo;
• fuel;
• freshwater;
• stores;
• passengers;
• and crew.

Understand the actual cargo payload available in the intended operating condition.

Gross tonnage relates to enclosed internal volume.

It is not the vessel's physical weight.

It can influence:

• regulation;
• port dues;
• and other operational matters.

Net tonnage relates more closely to earning spaces within the vessel and may also be relevant to certain dues and regulations.

Lightship weight represents the vessel without:

• cargo;
• fuel;
• stores;
• passengers;
• and other variable loads.

It becomes important in stability and recycling calculations.

Draught can directly determine commercial viability.

A ship capable of carrying more cargo may have to reduce loading to enter a shallow port.

That means theoretical capacity is not always usable capacity.

Higher speed can:

• shorten voyages;
• increase annual rotations;
• and potentially increase revenue.

It can also dramatically increase fuel consumption.

The commercially optimum speed is rarely simply maximum speed.

Many commercial ships operate below design speed to reduce fuel consumption.

Assess how efficiently the vessel performs at realistic operating speeds.

Fuel is one of the most important operating costs in shipping.

Do not rely solely on brochure consumption.

Review:

• sea-trial data;
• noon reports;
• engine records;
• weather-adjusted performance;
• and actual historical consumption where available.

Container Ships

Container ships earn by transporting standardised containers.

Commercial considerations include:

• TEU;
• reefer plugs;
• speed;
• fuel consumption;
• crane configuration;
• port restrictions;
• and charter-market demand.

Bulk carriers transport commodities such as:

• iron ore;
• grain;
• coal;
• minerals;
• and fertiliser.

Important factors include:

• deadweight;
• hold configuration;
• hatch covers;
• cranes;
• cargo residues;
• and trading history.

Crude tankers are highly specialised assets.

Evaluate:

• tank condition;
• pumping;
• coatings where applicable;
• cargo systems;
• vetting history;
• pollution-prevention systems;
• and intended trade.

Product tankers may carry different refined petroleum cargoes.

Cargo segregation and tank condition become particularly important.

Chemical tankers can require:

• specialist coatings;
• stainless tanks;
• sophisticated pumping;
• segregation;
• and extensive cargo compatibility knowledge.

A vessel's cargo history matters.

LNG carriers are highly specialised.

Their value can depend on:

• containment system;
• boil-off management;
• propulsion;
• efficiency;
• age;
• charter;
• and compatibility with terminals.

This is not a market for generalist due diligence.

LPG and other gas carriers also require specialist cargo systems and technical expertise.

The intended cargo determines suitability.

RoRo vessels transport wheeled cargo.

Commercial measures can include:

• lane metres;
• ramp capacity;
• deck height;
• deck strength;
• and turnaround.

RoPax combines vehicle freight with passengers.

The operator is therefore managing:

shipping + passenger transport + hospitality.

Ferry economics depend heavily on:

• route;
• schedule;
• turnaround;
• reliability;
• passenger demand;
• vehicle demand;
• and port infrastructure.

Cruise ships are unusual commercial vessels because the ship itself forms a substantial part of the product being sold.

A cruise acquisition requires expertise in both:

• marine operation;
• and hospitality.

Offshore vessel economics may depend on:

• day rates;
• utilisation;
• dynamic positioning;
• deck capacity;
• specialist equipment;
• and offshore-sector demand.

Markets also exist for vessels including:

• dredgers;
• cable layers;
• heavy-lift ships;
• research vessels;
• tugs;
• fishing vessels;
• workboats;
• and support vessels.

Specialist vessels can retain strong value where capability is difficult to replace.

Buying New

A new ship can offer:

• modern efficiency;
• current technology;
• lower initial maintenance;
• warranty;
• and greater regulatory longevity.

But requires:

• substantial capital;
• construction time;
• and newbuild risk.

A used vessel offers:

• immediate availability;
• established operating history;
• potentially lower capital cost;
• and faster deployment.

Condition becomes critical.

When freight markets are strong:

• second-hand prices can rise rapidly;
• shipyard orderbooks may fill;
• and newbuild delivery slots can extend.

When markets weaken, opportunities can emerge.

Pre-Purchase Inspection

Never rely only on:

• sales particulars;
• photographs;
• or broker descriptions.

Use competent marine professionals.

Review:

• classification society;
• class notation;
• survey status;
• conditions of class;
• recommendations;
• and upcoming surveys.

Outstanding class work can become expensive immediately after purchase.

Major class surveys can involve extensive:

• inspection;
• steel measurement;
• machinery work;
• tank inspection;
• and dry docking.

A ship approaching a major survey may carry a significant hidden capital requirement.

Review:

• previous docking;
• underwater work;
• coatings;
• propeller;
• rudder;
• shafts;
• sea valves;
• and steel repairs.

Investigate:

• corrosion;
• wastage;
• cracking;
• deformation;
• coatings;
• and previous repairs.

Thickness measurements can be particularly important on older ships.

Review:

• make;
• model;
• hours;
• overhaul history;
• cylinder condition;
• turbochargers;
• bearings;
• fuel system;
• and spare-parts availability.

Commercial ships depend heavily on electrical generation.

Check:

• hours;
• load history;
• maintenance;
• synchronisation;
• and redundancy.

Assess:

• propeller;
• shafting;
• gearbox;
• bearings;
• stern tube;
• and propulsion controls.

Where fitted, boilers can represent major maintenance and regulatory items.

Review:

• inspection;
• tubes;
• burners;
• controls;
• and certification.

The cargo system may be more commercially important than the propulsion system.

Inspect equipment such as:

• pumps;
• cranes;
• ramps;
• hatch covers;
• refrigeration;
• compressors;
• and cargo controls.

Ballast management has become a significant compliance and technical issue.

Review the installed system and its operational status.

Maintenance Records

Good records should show:

• planned maintenance;
• breakdowns;
• replacements;
• overhauls;
• and inspections.

Missing records increase uncertainty.

Review operational history rather than just current condition.

Patterns can reveal:

• overheating;
• abnormal consumption;
• repeated alarms;
• and chronic defects.

Historical oil analysis can reveal trends in machinery condition.

One good sample immediately before sale tells only part of the story.

Investigate:

• collisions;
• groundings;
• fires;
• flooding;
• pollution;
• and major machinery failures.

A properly repaired casualty does not automatically make a ship unacceptable.

But it must be understood.

Port State Control detention history deserves close attention.

Repeated detentions may indicate:

• poor maintenance;
• weak management;
• or compliance problems.

Flag State

The ship must operate under a flag administration.

Flag choice can influence:

• regulatory oversight;
• crewing;
• finance;
• reputation;
• and operating structure.

A buyer may choose to reflag after acquisition.

Plan this before completion.

A flag change may require:

• surveys;
• documentation;
• certification;
• and equipment changes.

Class provides technical oversight of areas such as:

• hull;
• machinery;
• electrical systems;
• and structural integrity.

Lenders, charterers and insurers may have requirements regarding class.

SOLAS

Depending on vessel type and operation, SOLAS requirements can affect:

• construction;
• fire safety;
• lifesaving;
• navigation;
• and communications.

Pollution rules can affect:

• oil;
• sewage;
• garbage;
• emissions;
• and other discharges.

Ballast-water management requirements can require approved treatment systems.

Check:

• system type;
• approval;
• operation;
• maintenance;
• and compliance.

Hull coatings must comply with applicable environmental requirements.

The International Safety Management framework can require formal safety-management systems for applicable vessels and operators.

Ship and port security requirements can apply to relevant international operations.

The Maritime Labour Convention can affect:

• employment;
• accommodation;
• welfare;
• contracts;
• repatriation;
• and working conditions.

Efficiency Is Becoming Asset Value

Fuel efficiency no longer affects only the bunker bill.

It can influence:

• compliance;
• charter attractiveness;
• finance;
• and resale.

Energy-efficiency requirements can affect existing ships.

Some vessels may need measures such as:

• engine power limitation;
• technical modifications;
• or operational changes.

Carbon-intensity requirements measure aspects of operational efficiency for applicable ships.

A vessel's rating can become commercially significant.

Two apparently similar ships may have very different futures.

One may:

• comply efficiently;
• attract charterers;
• and remain commercially competitive.

Another may require:

• reduced speed;
• modification;
• alternative fuels;
• or substantial capital expenditure.

Before buying, model what the vessel may need over:

• five years;
• ten years;
• and the intended remaining ownership period.

Conventional Marine Fuels

Existing ships may operate on fuels such as:

• marine gas oil;
• very-low-sulphur fuel oil;
• and other marine fuel grades.

Fuel compatibility depends on machinery and regulation.

Some ships use LNG as fuel.

Consider:

• tank capacity;
• bunkering infrastructure;
• methane emissions;
• and future regulation.

Methanol-capable ships are becoming increasingly relevant.

Evaluate:

• fuel availability;
• price;
• tank requirements;
• engine capability;
• and source of the methanol.

Some existing ships may be able to use approved biofuel blends with limited modification.

Compatibility must be confirmed.

Ammonia is being investigated as a future marine fuel.

It creates significant challenges around:

• toxicity;
• storage;
• safety;
• and infrastructure.

Hydrogen may have applications in particular maritime sectors.

Its low volumetric energy density creates challenges for long-range shipping.

Battery-electric operation can be highly effective on:

• ferries;
• harbour vessels;
• short-sea routes;
• and predictable operations.

It is less straightforward for long-distance deep-sea shipping.

Purchase Price Is Not the Funding Requirement

Capital may also be required for:

• surveys;
• legal work;
• dry docking;
• modifications;
• initial stores;
• crew;
• insurance;
• and working capital.

Traditional ship finance may involve secured lending against the vessel.

Lenders can consider:

• borrower;
• vessel;
• age;
• charter;
• class;
• market;
• and residual value.

A lender may finance only part of the purchase price.

The owner must provide equity.

Ship leasing can provide alternative financing structures.

The legal owner and commercial operator may be different entities.

An owner may sell a vessel to a financier and lease it back.

This can release capital while retaining operational use.

A long-term charter with a strong counterparty can improve financing prospects because it provides visible future revenue.

Broker

Shipbrokers can:

• identify vessels;
• communicate with owners;
• negotiate price;
• and coordinate transactions.

Use brokers with relevant sector experience.

An offer may include conditions relating to:

• price;
• inspection;
• class records;
• delivery;
• and financing.

Commercial ship transactions commonly use a formal Memorandum of Agreement.

The exact form and amendments matter.

Use specialist maritime lawyers.

A deposit may be placed with an agreed stakeholder or escrow arrangement according to the transaction structure.

Verify payment instructions independently.

The buyer may have contractual rights to inspect:

• vessel;
• records;
• and class documentation.

Understand the acceptance mechanism before signing.

Delivery can occur:

• in port;
• at anchorage;
• or another agreed location.

Location can affect:

• fuel;
• crew;
• tax;
• customs;
• and positioning cost.

The buyer may need to pay separately for:

• remaining fuel;
• lubricants;
• and agreed stores

at delivery.

Documents may include:

• bill of sale;
• registry documents;
• class documents;
• corporate authorities;
• certificates;
• and deletion certificate where applicable.

Verify Ownership

Confirm that the seller has legal authority to sell.

Ships are frequently financed.

A registered mortgage normally needs to be properly discharged as part of a clean sale unless otherwise agreed.

Ships can be subject to maritime claims.

Potential issues can arise from matters such as:

• crew wages;
• salvage;
• collision;
• and other legally recognised claims.

Rules vary by jurisdiction.

A vessel can potentially be arrested in connection with qualifying maritime claims.

Legal due diligence is therefore essential.

Crew Is an Operating System

A commercial ship cannot function effectively without competent people.

Crew planning involves:

• qualifications;
• nationality;
• contracts;
• visas;
• rotations;
• training;
• accommodation;
• and payroll.

Flag administrations can specify minimum safe manning.

This is not necessarily the optimum commercial crewing level.

Key positions can include:

• master;
• chief officer;
• chief engineer;
• engineering officers;
• and other certified personnel.

Requirements depend on the vessel.

Deck and engine ratings perform essential operational and maintenance functions.

Some vessels also require:

• electricians;
• cargo specialists;
• DP officers;
• hospitality staff;
• medical personnel;
• or specialist technicians.

International crews are common.

Consider:

• visas;
• travel;
• communication;
• certification recognition;
• and employment arrangements.

Technical Management

A technical manager may handle:

• maintenance;
• class;
• dry docking;
• procurement;
• safety;
• and technical budgets.

Crew management can include:

• recruitment;
• payroll;
• certification;
• travel;
• and training.

Commercial managers may handle:

• chartering;
• freight;
• voyage planning;
• and customer relationships.

Some owners outsource much of the vessel operation.

Others retain substantial functions internally.

Compare:

• vessel experience;
• fleet size;
• technical capability;
• reporting;
• procurement;
• safety record;
• and transparency.

Crew

Include:

• wages;
• travel;
• training;
• insurance;
• victualling;
• and management.

Budget for:

• machinery;
• steel;
• coatings;
• electrical systems;
• navigation;
• cargo equipment;
• and routine consumables.

Commercial marine insurance can include several forms of cover depending on the operation.

A ship requires continual supplies of:

• filters;
• oils;
• chemicals;
• safety equipment;
• tools;
• and replacement parts.

Allow for:

• annual surveys;
• intermediate surveys;
• special surveys;
• and statutory inspections.

Dry-docking cost can create major periodic expenditure.

Build reserves.

External technical, crew or commercial managers will charge for their services.

Costs may include:

• flag;
• communications;
• software;
• accounting;
• and compliance.

Bunkers

Fuel may be the largest voyage expense.

Ports can charge for:

• berth;
• harbour;
• pilotage;
• towage;
• waste;
• and other services.

Major canals can represent substantial voyage costs.

Route economics must include them.

Local agents coordinate many port requirements.

Depending on the charter arrangement, some cargo-related expenses may fall to owner or charterer.

Read the charterparty.

Hull and Machinery

Hull and Machinery insurance generally protects the physical vessel against specified insured risks.

P&I arrangements can cover significant third-party maritime liabilities.

These can include areas such as:

• crew;
• pollution;
• collision liabilities;
• cargo;
• and other risks,

subject to the terms of cover.

Additional cover may be required for certain trading areas.

Loss-of-hire insurance may protect qualifying income loss following insured events.

Plan Before the Ship Stops Earning

Every day in dock can represent:

cost + lost revenue.

Prepare the work list early.

Where practical, combine:

• class surveys;
• statutory work;
• steel repairs;
• propulsion maintenance;
• coatings;
• and upgrades.

Once a vessel is opened up, additional defects may appear.

Maintain contingency.

A repair yard should be chosen based on:

• vessel type;
• dock dimensions;
• capability;
• price;
• location;
• and schedule.

Daily Earnings

Track what the vessel actually earns after voyage costs.

Headline freight revenue is not profit.

A technically perfect ship earns nothing while unnecessarily idle.

Monitor:

• trading days;
• off-hire;
• maintenance;
• and waiting.

Off-hire can result from:

• machinery failure;
• surveys;
• accidents;
• or contractual events.

Reducing off-hire is one of the most important aspects of ship management.

Model each voyage using:

Revenue

minus fuel

minus port costs

minus canal costs

minus commissions

minus other voyage expenses

Then consider fixed operating costs.

Imagine two vessels.

Vessel A

Purchase price: $12 million.

Vessel B

Purchase price: $15 million.

Vessel A appears cheaper.

But suppose Vessel A:

• burns substantially more fuel;
• requires an imminent dry dock;
• needs ballast-water upgrades;
• has poor emissions performance;
• and suffers more off-hire.

Vessel B may easily become the cheaper asset over five years.

Always calculate:

total cost of ownership.

Before buying, model at least:

Acquisition

• purchase;
• legal;
• survey;
• finance;
• initial repairs.

Revenue

• expected rates;
• utilisation;
• off-hire.

Operating Costs

• crew;
• maintenance;
• insurance;
• management;
• class.

Voyage Costs

• fuel;
• ports;
• canals.

Capital Expenditure

• dry docking;
• major machinery;
• regulatory upgrades.

Exit

• expected resale;
• recycling;
• remaining debt.

The acquisition decision should survive realistic downside scenarios.

Ships Are Tradable Assets

Commercial vessels can change value rapidly.

Market value can be influenced by:

• freight rates;
• charter rates;
• newbuild prices;
• interest rates;
• scrap prices;
• regulation;
• and fleet supply.

Older vessels usually face declining financing and charter options.

But strong markets can temporarily increase values dramatically.

A vessel freshly through a major survey may be more attractive than one facing immediate capital expenditure.

A valuable long-term charter can materially affect a vessel's investment proposition.

Every Ship Eventually Reaches the End of Commercial Life

The decision may be driven by:

• age;
• maintenance;
• regulation;
• market;
• fuel efficiency;
• or steel value.

A vessel has residual value in:

• steel;
• machinery;
• and recyclable materials.

Market conditions affect this value.

Ship recycling has significant:

• environmental;
• worker-safety;
• regulatory;
• and reputational implications.

Owners should use appropriate compliant facilities and professional advice.

Buying on Price Alone

Cheap ships are cheap for a reason.

Find the reason.

A low purchase price followed by a major survey can destroy the apparent bargain.

Small differences in daily consumption become enormous over years.

Regulatory inefficiency can become commercial obsolescence.

Verify actual operating performance.

Unless deliberately speculating on the market, understand where revenue will come from.

A ship can hide millions in deferred maintenance.

This is particularly important for:

• tankers;
• chemical carriers;
• and specialist vessels.

Technical condition is irrelevant if legal title is compromised.

The ship begins consuming cash immediately.

Revenue may arrive later.

Commercial

□ Intended trade

□ Cargo

□ Routes

□ Ports

□ Freight market

□ Charter market

□ Expected utilisation

□ Revenue model

□ Downside scenario

Vessel

□ Type

□ Age

□ Deadweight

□ Gross tonnage

□ Draught

□ Speed

□ Fuel consumption

□ Range

□ Cargo capacity

□ Port compatibility

Technical

□ Class status

□ Special survey

□ Dry-dock history

□ Hull condition

□ Thickness measurements

□ Main engine

□ Generators

□ Propulsion

□ Cargo equipment

□ Ballast system

Records

□ Maintenance

□ Engine logs

□ Oil analysis

□ Casualty history

□ Detentions

□ Previous repairs

□ Consumption history

Regulatory

□ Flag

□ Class

□ SOLAS

□ MARPOL

□ MLC

□ ISM

□ ISPS

□ Ballast water

□ Emissions

□ EEXI/CII where applicable

Transaction

□ Seller verified

□ Title

□ Mortgage

□ Liens

□ MOA

□ Deposit

□ Inspection

□ Delivery location

□ Bunkers

□ Documentation

Finance

□ Equity

□ Debt

□ Interest

□ Loan-to-value

□ Working capital

□ Dry-dock reserve

□ Currency exposure

Operation

□ Crew

□ Technical manager

□ Commercial manager

□ Insurance

□ P&I

□ Spares

□ Bunkers

□ Ports

□ Communications

Why the Political Map Now Matters When Buying a Ship

A commercial vessel may have an expected working life measured in decades.

During that period:

• governments change;
• alliances change;
• sanctions change;
• wars begin;
• waterways become dangerous;
• insurers alter cover;
• ports become unavailable;
• and established shipping routes can cease to be economically viable.

For a ship buyer, geopolitical risk is therefore no longer simply something for the operations department to consider after acquisition.

It can affect:

• which vessel you buy;
• how much range it requires;
• how much fuel it must carry;
• what insurance it can obtain;
• which flag it operates under;
• who will charter it;
• where it can trade;
• and ultimately what the vessel is worth.

The events affecting the Strait of Hormuz, Red Sea and Bab el-Mandeb provide an important contemporary example.

As of September 2026

The Middle East maritime situation remains exceptionally volatile.

Commercial vessels have been attacked in and around the Strait of Hormuz.

Shipping through the Gulf has been substantially disrupted.

Attacks and military activity have also continued in the Red Sea and Gulf of Aden.

At the same time, Houthi forces in Yemen have increased their ability to threaten shipping around the Bab el-Mandeb approaches.

These circumstances can change quickly.

For that reason, the examples in this section should be treated as an illustration of how geopolitical instability affects commercial shipping, rather than as permanent route guidance.

Shipowners and operators must obtain current security, insurance, flag-state and government guidance before entering affected areas.

Three waterways demonstrate why a relatively small geographical area can influence worldwide shipping:

Strait of Hormuz

Connects the Persian Gulf with the Gulf of Oman and Arabian Sea.

Bab el-Mandeb

Connects the Red Sea with the Gulf of Aden.

Suez Canal

Connects the Red Sea with the Mediterranean.

Together, these waterways form vital parts of the maritime routes linking:

• Asia;
• the Middle East;
• Europe;
• and global energy markets.

Disruption at one location can change shipping economics thousands of miles away.

Why Hormuz Matters

The Strait of Hormuz sits between:

• Iran;
• and Oman.

It provides maritime access to major Gulf exporters and ports.

Cargoes passing through or originating within the Gulf can include:

• crude oil;
• petroleum products;
• LNG;
• LPG;
• containers;
• chemicals;
• bulk cargo;
• and general freight.

For some sectors, there is no simple maritime alternative.

A tanker may cost tens or hundreds of millions of dollars.

Yet its commercial operation can depend upon safe passage through a relatively narrow stretch of water.

This illustrates a fundamental reality of shipping:

The value of a vessel depends partly on its ability to reach the markets that need it.

Conflict involving Iran can create risks including:

• attacks on commercial vessels;
• mines;
• missiles;
• drones;
• vessel detention;
• interference with navigation;
• military escalation;
• sanctions;
• and temporary route closure.

The threat need not result in a permanent physical closure to have major economic consequences.

The perception of danger alone can affect:

• insurance;
• crew;
• charterers;
• vessel availability;
• and freight rates.

This distinction is important.

A route may remain technically passable while becoming commercially unattractive because:

• insurers charge extreme premiums;
• crews refuse transit;
• owners decline fixtures;
• naval risk increases;
• charterers avoid the area;
• or delays become unpredictable.

Commercial accessibility and physical accessibility are not the same thing.

Normal marine insurance may not automatically cover every consequence of war.

Ships entering areas considered high risk may face:

• additional war-risk premiums;
• voyage-specific premiums;
• restrictions;
• exclusions;
• or insurer approval requirements.

During severe crises, insurance costs can become a major component of voyage economics.

Imagine a cargo voyage that normally produces an attractive margin.

If entering a conflict region suddenly requires:

• additional insurance;
• security expenditure;
• higher crew costs;
• greater fuel reserves;
• and delay contingency,

the same freight rate may no longer produce a profit.

The route has not changed.

The economics have.

The ship is not the only insured asset.

A tanker can carry cargo worth many millions of dollars.

Escalating war risk can therefore affect:

• vessel insurance;
• cargo insurance;
• charterers;
• traders;
• banks;
• and cargo owners.

This can alter the entire commercial chain.

Commercial calculations must never override seafarer safety.

Owners and operators must consider:

• recognised threat assessments;
• flag-state guidance;
• insurer requirements;
• company security procedures;
• and the master's professional judgement.

The crew are civilians working aboard a commercial vessel.

High-risk voyages can create:

• stress;
• fatigue;
• fear;
• family concern;
• and recruitment problems.

Owners should consider not just minimum contractual obligations but the wider impact on crew welfare.

The Other Critical Gateway

Bab el-Mandeb lies between:

• Yemen;
• Djibouti;
• and Eritrea.

It connects:

the Red Sea with the Gulf of Aden and onward to the Indian Ocean.

For traffic using the Suez Canal, it is a critical southern gateway.

Conflict in Yemen can affect vessels far beyond Yemen itself.

A ship travelling between Asia and Europe may have no commercial involvement with Yemen whatsoever.

Yet its route may take it close to the Yemeni coast because of global geography.

This means a local conflict can become an international shipping problem.

Houthi forces in Yemen have demonstrated the capability to threaten commercial shipping using systems including:

• missiles;
• drones;
• and other weapons.

The result has been periods in which major shipowners and operators have reconsidered or suspended Red Sea transit.

It is important to distinguish between:

controlling an international strait

and

possessing sufficient military capability to make using it dangerous or commercially unattractive.

The Houthis do not need formal legal or physical control over every vessel entering Bab el-Mandeb to influence international shipping.

The ability to attack ships can be enough to change:

• route planning;
• insurance;
• chartering;
• freight rates;
• and vessel deployment.

Perim Island sits in the Bab el-Mandeb Strait.

Its location gives the surrounding area obvious strategic importance.

Changes in military control around the island and Yemen's western coastline therefore matter to maritime planners.

For shipping companies, the significance is not simply who occupies territory.

The question is:

What capability does that create to observe, threaten or interfere with passing vessels?

The Normal Asia-Europe Shortcut

For many vessels travelling between:

• Asia;
• Middle East;
• Mediterranean;
• and Northern Europe,

the Red Sea and Suez Canal provide a substantially shorter route than sailing around Africa.

If the Red Sea route becomes unacceptable, vessels may divert around:

the Cape of Good Hope.

This avoids Bab el-Mandeb and Suez.

But it can add:

• thousands of nautical miles;
• significant sailing time;
• substantial fuel consumption;
• additional crew time;
• more machinery hours;
• and extra emissions.

This creates an unusual shipping-market effect.

Route disruption is negative for:

• cargo owners;
• supply chains;
• consumers;
• and many operators.

But longer voyages can increase demand for vessel capacity.

Why?

Because each ship is occupied for longer.

Shipping demand is not measured only by how many tonnes of cargo move.

Distance matters.

Transporting:

one tonne for 1,000 miles

requires much less vessel capacity than transporting:

one tonne for 5,000 miles.

This is sometimes analysed through tonne-mile demand.

If ships are forced onto longer routes, effective demand for shipping capacity can increase even if the amount of cargo remains unchanged.

Suppose a fleet of 100 ships normally completes a particular round voyage in 30 days.

If rerouting increases it to 40 days, those ships complete fewer voyages each year.

The effective available fleet capacity falls.

That can contribute to:

• tighter vessel supply;
• higher charter rates;
• higher freight rates;
• and rising second-hand vessel values.

Geopolitical disruption can therefore alter the ship market itself.

Range Becomes More Important

A vessel designed around established short routing may become less attractive if regular diversions require substantially greater distances.

Consider:

• fuel capacity;
• economical range;
• reserve;
• and bunkering options.

An inefficient vessel becomes increasingly expensive when voyages become longer.

For example, if rerouting adds many days at sea:

A ship burning:

25 tonnes per day

has a very different cost exposure from one burning:

45 tonnes per day.

Geopolitical uncertainty can magnify the value of fuel efficiency.

More fuel capacity can provide:

• greater route flexibility;
• fewer bunkering stops;
• ability to avoid unsuitable ports;
• and more resilience during disruption.

But fuel also adds weight and occupies space.

A vessel capable of operating efficiently across different speeds may be more commercially adaptable.

During disruption the operator might need to:

• speed up to recover schedule;
• slow steam to offset higher fuel costs;
• or alter voyage planning completely.

Older tonnage can sometimes benefit during unexpected market shortages because charter rates rise.

But older ships may also face:

• higher fuel consumption;
• greater maintenance;
• insurance limitations;
• regulatory issues;
• and charterer restrictions.

Do not assume every ship benefits equally from disruption.

Different geopolitical events affect ship sectors differently.

Tankers are especially exposed to Gulf instability because of the importance of Middle Eastern energy exports.

Consider:

• war-risk insurance;
• cargo values;
• alternative terminals;
• sanctions;
• and charterer requirements.

LNG shipping can be particularly affected where gas-export infrastructure and shipping lanes are concentrated geographically.

A disruption can influence:

• LNG availability;
• vessel positioning;
• charter rates;
• and alternative sourcing.

Container operators can reroute around Africa.

But the consequences can include:

• longer transit time;
• additional vessels required;
• container imbalance;
• port congestion;
• schedule disruption;
• and higher operating costs.

Bulk shipping may be affected by changing:

• commodity sources;
• voyage distances;
• fuel prices;
• and trade patterns.

A disruption in one region can redirect cargo sourcing to another continent.

Longer routes can affect:

• vehicle delivery schedules;
• manufacturers;
• port rotations;
• and vessel availability.

Passenger vessels face a different calculation.

Cruise operators may alter itineraries rather than expose guests to perceived conflict risk.

This can affect:

• home ports;
• destinations;
• repositioning voyages;
• and seasonal deployment.

Conflict can affect offshore energy projects through:

• security;
• energy prices;
• project delays;
• and changing investment.

The effect may be positive or negative depending on the sector and region.

Middle East conflict can affect oil prices.

Higher crude prices can feed into:

• marine fuel;
• transport costs;
• voyage economics;
• and inflation throughout the shipping supply chain.

A buyer evaluating a vessel should therefore model fuel costs at more than one price level.

Do not calculate the acquisition using one fuel assumption.

Model several scenarios.

For example:

Scenario A — Normal market

Fuel at expected long-term level.

Scenario B — Elevated geopolitical risk

Fuel rises substantially.

Scenario C — Major supply disruption

Fuel becomes extremely expensive and certain bunkering locations become difficult.

Then ask:

Does the vessel still make commercial sense?

A familiar bunker hub may become:

• unavailable;
• expensive;
• congested;
• or difficult to insure.

A vessel with sufficient range may have more options.

War and geopolitical disputes frequently result in sanctions.

These may target:

• countries;
• companies;
• individuals;
• banks;
• cargoes;
• ports;
• ships;
• insurers;
• and service providers.

A perfectly seaworthy vessel can become commercially unusable if its trading history creates sanctions problems.

Before buying a ship, investigate:

• ownership history;
• beneficial ownership;
• flag history;
• trading history;
• port calls;
• cargo history;
• previous names;
• and identification records.

Specialist sanctions advice may be required.

Geopolitical sanctions have contributed to increased attention around so-called:

shadow fleets.

These can involve older vessels operating in opaque ownership or insurance structures around sanctioned trades.

This creates risks for legitimate buyers.

An apparently inexpensive tanker may have:

• complicated ownership history;
• questionable insurance history;
• sanctions exposure;
• unclear management;
• unusual flag changes;
• or problematic trading history.

The bargain may carry substantial legal and commercial risk.

Commercial ships can:

• change names;
• change flags;
• change owners;
• and change managers.

The IMO ship identification number normally remains an important permanent identifier.

Due diligence should therefore follow the vessel's identity, not just its current name.

Geopolitical instability can increase scrutiny of:

• flag state;
• owner nationality;
• cargo origin;
• destination;
• charterer;
• and beneficial ownership.

A flag acceptable for one trade may be less attractive for another.

War can create complicated contractual questions.

Examples include:

• Can the owner refuse a dangerous port?
• Who pays additional insurance?
• Who decides whether a route is unsafe?
• Who pays for diversion?
• What happens to fuel costs?
• What happens to delivery dates?
• Does force majeure apply?
• Can the master refuse the order?

The answers depend on:

• charterparty wording;
• applicable law;
• and the actual circumstances.

Do not rely on assumptions.

Commercial charterparties may contain specific war-risk provisions.

These can allocate responsibilities relating to:

• dangerous areas;
• voyage orders;
• additional premiums;
• crew bonuses;
• and alternative routing.

The wording matters enormously during an actual crisis.

A Cape of Good Hope diversion can add substantial cost.

Depending on the contractual arrangement, disputes may arise over:

• additional fuel;
• additional time;
• hire;
• freight;
• port expenses;
• and delivery delay.

Owners and charterers should understand this before a crisis occurs.

Some high-risk areas can trigger additional crew payments or benefits under:

• employment agreements;
• collective bargaining arrangements;
• or company policy.

This belongs in voyage economics.

Operators in higher-risk regions may consider measures including:

• enhanced watches;
• citadels;
• communications procedures;
• physical barriers;
• specialist security advice;
• and other recognised protective measures.

Measures must be appropriate to the particular threat.

A piracy response is not automatically an effective response to missiles or drones.

This distinction matters.

Pirates historically may seek to:

• board;
• hijack;
• or ransom.

Military or militant attacks may involve:

• missiles;
• drones;
• explosives;
• or deliberate destruction.

The required risk assessment is therefore different.

Operators considering Red Sea diversions and regional trading should remember that maritime threats are not confined to one armed group.

Piracy and armed robbery can remain separate risks in parts of:

• Gulf of Aden;
• Arabian Sea;
• and waters around the Horn of Africa.

Threat assessment should consider the entire voyage.

A buyer should not automatically assume:

“This will be over before we take delivery.”

Geopolitical disruptions can:

• end quickly;
• continue for years;
• recur;
• or permanently alter trade patterns.

A ship purchased today may still be operating in the 2040s or beyond.

Where commercially sensible, resilience can include:

• economical range;
• sufficient fuel capacity;
• efficient slow steaming;
• alternative fuel capability;
• strong communications;
• good crew endurance;
• flexible cargo capability;
• and access to multiple trading regions.

Flexibility has value when the world is unstable.

An operator dependent upon one route or region carries concentrated geopolitical risk.

Fleet strategy may therefore consider exposure across:

• different trades;
• different cargoes;
• different regions;
• and different charterers.

One attraction of shipping is the ability to reposition an asset.

But not every ship can simply move to another market.

A vessel may be constrained by:

• cargo system;
• size;
• draught;
• class;
• charter;
• flag;
• regulations;
• terminal compatibility;
• and crew.

True flexibility must be assessed before purchase.

Geopolitical disruption can create opportunities for shipowners.

Possible effects include:

• longer voyages;
• greater tonne-mile demand;
• higher charter rates;
• rising freight rates;
• higher demand for particular vessel classes;
• and increased second-hand values.

But buying a ship specifically because of a temporary crisis is highly speculative.

A very important principle:

Do not justify a 20-year asset solely on a six-month geopolitical event.

A ship bought because today's freight rates are exceptional still needs to make sense after:

• routes reopen;
• insurance normalises;
• fuel prices fall;
• vessel supply increases;
• and freight rates decline.

Stress-test the purchase against normal conditions.

Before acquiring a commercial vessel, ask:

Trading Exposure

□ Which chokepoints will the vessel regularly use?

□ Strait of Hormuz?

□ Bab el-Mandeb?

□ Suez Canal?

□ Panama Canal?

□ Turkish Straits?

□ Malacca Strait?

□ Other restricted waterways?

Conflict

□ Current armed conflicts

□ Regional military tensions

□ Missile/drone threat

□ Piracy

□ Maritime crime

□ Port security

Route Alternatives

□ Can the vessel reroute?

□ Additional distance

□ Additional days

□ Additional fuel

□ Additional crew cost

□ Alternative bunker ports

□ Alternative cargo terminals

Insurance

□ Hull war-risk cover

□ P&I implications

□ Cargo insurance

□ Additional premiums

□ Trading warranties

□ High-risk-area restrictions

Crew

□ Crew safety

□ Employment terms

□ Bonuses

□ Nationality/visa issues

□ Welfare

□ Repatriation capability

Vessel

□ Fuel consumption

□ Bunker capacity

□ Range

□ Speed flexibility

□ Machinery reliability

□ Stores

□ Freshwater

□ Communications

Commercial

□ Charterparty war clauses

□ Diversion costs

□ Freight implications

□ Off-hire exposure

□ Delay exposure

□ Charterer approval

Legal

□ Sanctions

□ Vessel trading history

□ Previous ownership

□ Previous names

□ Flags

□ Beneficial ownership

□ Cargo history

The Strait of Hormuz and Bab el-Mandeb demonstrate something much larger than the present Middle East crisis.

Commercial ships operate across a world where:

• politics;
• geography;
• energy;
• military power;
• insurance;
• and international trade

are inseparable.

A buyer should therefore evaluate more than:

“Is this a good ship?”

They should also ask:

“Is this a good ship for the world in which it will have to operate?”

A vessel with:

• lower fuel consumption;
• greater range;
• stronger compliance;
• broader trading flexibility;
• reliable machinery;
• and fewer geographical limitations

may command a premium at purchase.

In an unstable world, that flexibility can become extremely valuable.

One missile does not change:

• the engine;
• the cargo capacity;
• the deadweight;
• or the age of a ship.

But it can change:

• where the ship can sail;
• who will charter it;
• how much it costs to insure;
• how far it must travel;
• what its fuel costs;
• and how much freight it can earn.

That is why geopolitical analysis belongs alongside:

• technical inspection;
• finance;
• chartering;
• and regulatory due diligence

when purchasing commercial ships.

24Ships follows not only vessels, but the markets, routes, regulations and global events that determine how commercially useful those vessels actually are.

Geopolitical and security conditions can change rapidly. This section reflects the types of risks affecting international shipping as of September 2026 and should not be treated as navigational, military, security, insurance or legal advice. Shipowners and operators should obtain current information from flag states, maritime security organisations, insurers, P&I providers, governments and other appropriate professional sources before making routing decisions.