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Admiralty Law Glossary UK: Maritime Terms Explained

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Part ofAdmiralty Court Forms UK

Written by Brad Askew Solicitor (non-practising)
Brad is on the roll of solicitors of England & Wales but does not hold a practising certificate and does not provide legal advice.
Updated June 2026 · England & Wales
Admiralty law, often called maritime law, sits in its own corner of the English legal system. It governs what happens on the water, who is responsible when things go wrong, and how disputes between owners, crews, insurers and cargo interests get resolved. The language can feel impenetrable if you have not worked with it before, which is why this glossary exists. Below, I have pulled together the terms that come up most often in UK admiralty matters and written each one in plain English, so you can get your bearings quickly. Whether you are a vessel owner, a seafarer, a logistics operator, an insurer or simply someone who has been handed a document full of unfamiliar terminology, this guide should help you make sense of what you are reading. I am Brad Askew, and I have put this together as a practical reference rather than an academic text.

Overview

This glossary is a reference guide to the core terminology used in English admiralty and maritime law. It is not a textbook, and it is not a substitute for a conversation with a qualified adviser where your circumstances need one.

What it does is give you a working vocabulary so you can follow a contract, understand a claim letter, or hold a sensible conversation about a dispute involving a ship, cargo, crew, or the sea itself. The terms here cover the main areas you are likely to encounter in the UK: the specialist court that hears these matters, the types of claim it deals with, the statutory protections available to crew, the mechanics of arresting a vessel, how salvage and collisions are handled, and the way marine insurance fits into the picture.

I have kept the entries short and practical, and where a concept connects to another term in the glossary, you will find it cross-referenced so you can follow the thread.

Key steps

  1. Identify the area of maritime law in play. Start by working out whether your issue involves a contract (such as a charterparty or bill of lading), a tort (such as a collision or personal injury at sea), salvage, insurance, or a crew-related claim. The category shapes which rules and time limits apply and whether the Admiralty Court is the right venue.
  2. Check jurisdiction and time limits. Maritime claims often have tight limitation periods, and some must be brought within two years rather than the usual six. Confirm whether the matter falls within the jurisdiction of the Admiralty Court in England and Wales and whether any international conventions, such as those on collisions or carriage of goods by sea, apply.
  3. Gather the key documents and evidence. Pull together charterparties, bills of lading, insurance policies, ship's logs, crew agreements, survey reports, photographs, and correspondence. In admiralty matters, contemporaneous records carry real weight, and the absence of a document can be as significant as its contents when a dispute goes to court.
  4. Consider whether security is needed. If you are pursuing a claim against a vessel or its owner, think about whether you need to arrest the ship or obtain a letter of undertaking from P&I insurers to secure your position. Ships move between jurisdictions quickly, and delay can mean the practical loss of a remedy.
  5. Take guidance before committing to a course of action. Admiralty procedure has its own quirks, from in rem claims against the vessel itself to the handling of salvage awards and limitation funds. A short conversation with an experienced legal adviser, focused on your specific situation, can help you avoid procedural missteps before costs start to mount.

Common questions

If you're dealing with this kind of situation, a call with an experienced legal adviser can help you work out the right next step — from £89.

Common questions

Q What is the Admiralty Court and when does it get involved?
The Admiralty Court is a specialist part of the King's Bench Division of the High Court in England and Wales. It hears disputes with a maritime character, including collisions, salvage, ship arrests, mortgages over vessels, cargo claims, and limitation of liability proceedings. Not every shipping dispute ends up there, but where a claim involves the vessel itself or specialist maritime issues, this is usually the correct forum.
Q How does a ship arrest actually work in the UK?
A ship arrest is a court-ordered detention of a vessel to provide security for a maritime claim. A claimant issues an in rem claim form in the Admiralty Court, applies for a warrant of arrest, and the Admiralty Marshal then detains the ship while it is within the jurisdiction. In practice, most arrests are resolved quickly once the owner or their insurer provides security so the vessel can sail.
Q What protections do seafarers have under UK law?
Crew working on UK vessels are covered by a mix of statute, common law and international instruments such as the Maritime Labour Convention. Protections typically include the right to a written employment agreement, minimum standards on wages, hours, rest, accommodation and medical care, and the ability to bring claims for unpaid wages or injury suffered at sea. The specific route depends on the flag of the ship and the terms of the contract.
Q What is a salvage award and how is it calculated?
A salvage award is a payment made to a salvor who has successfully saved a ship or cargo from danger at sea. It rewards voluntary service and is assessed against factors such as the value of the property saved, the skill and effort involved, the risks faced, and the environmental benefit achieved. In the UK, salvage is governed largely by the International Convention on Salvage 1989, given effect through the Merchant Shipping Act 1995.
Q Can a shipowner limit their liability after an incident?
Yes, in many cases a shipowner, charterer, manager or operator can limit their financial liability for certain maritime claims under the Convention on Limitation of Liability for Maritime Claims, as incorporated into UK law. The limit is calculated by reference to the tonnage of the vessel. Limitation is not automatic, and it can be lost where loss results from a personal act or omission committed with intent or recklessly.
Q How is marine insurance different from ordinary insurance?
Marine insurance covers risks to ships, cargo, freight and related interests, and in the UK it is shaped by the Marine Insurance Act 1906 together with modern reforms under the Insurance Act 2015. One of its defining features is the duty of fair presentation, which places a strong obligation on the insured to disclose material information. Marine policies also use specialist wordings and clauses that differ significantly from consumer insurance.
Q What time limit applies to maritime claims?
Time limits vary by claim type. Collision claims typically have a two-year limitation period, salvage claims also have two years, and cargo claims under the Hague-Visby Rules must usually be brought within one year of delivery or the date delivery should have occurred. Other maritime claims may follow general contract or tort limitation periods. Because the deadlines are short and strict, it is worth checking the position early.
If you're dealing with this kind of situation, a call with an experienced legal adviser can help you work out the right next step — from £89.

Sources

This guide is based on primary UK law and official guidance.

Brad Askew, Solicitor (non-practising)

Written & reviewed by

Brad Askew Solicitor (non-practising)

Brad is on the roll of solicitors of England & Wales but does not hold a practising certificate and does not provide legal advice. LegalDocuments.co.uk is not a law firm and does not provide regulated legal advice.

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Legal disclaimer
This article is for general information only. It is a tool to help you find your way — not legal advice, and not a substitute for speaking to a qualified adviser about your situation.