British Royal Navy Casualty Logs 1939-1945
Did your ancestor serve in Britain's Royal Navy during the Second World War? These records document Royal Navy ships that were lost, damaged, or involved in serious incidents during the Second World War, recording events such as sinkings, enemy attacks, collisions, groundings, and mine strikes. Ship casualty logs typically note the vessel’s name, date, location, and cause of the incident, and sometimes include details on the outcome or extent of loss. For family historians, these logs help explain sudden deaths, missing postings, or the end of a ship’s service, while also offering a stark insight into the scale, risk, and human cost of Britain’s wartime naval operations. Created in partnership with the Royal Navy Museums.
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Did your ancestor serve in Britain's Royal Navy during the Second World War? These records document Royal Navy ships that were lost, damaged, or involved in serious incidents during the Second World War, recording events such as sinkings, enemy attacks, collisions, groundings, and mine strikes. Ship casualty logs typically note the vessel’s name, date, location, and cause of the incident, and sometimes include details on the outcome or extent of loss. For family historians, these logs help explain sudden deaths, missing postings, or the end of a ship’s service, while also offering a stark insight into the scale, risk, and human cost of Britain’s wartime naval operations. Created in partnership with the Royal Navy Museums.
Learn about these records
You may find information including -
First name
Last name
Official number
Age
Injury date
Death date
By exploring the original record, you may also find out about your ancestor's injuries as well as the names of their shipmates.
British ships in the Second World War
During the Second World War, Britain’s surface fleet was stretched across the globe, protecting trade routes, escorting convoys, engaging enemy warships, and supporting amphibious operations. Battleships, cruisers, destroyers, corvettes, and auxiliary vessels all played vital roles in keeping Britain supplied and projecting naval power from the Atlantic and Arctic to the Mediterranean and Far East. The war at sea was relentless: ships faced constant threats from submarines, aircraft, mines, and surface attack, while harsh weather, long deployments, and mechanical strain added further risks. Losses were heavy, particularly among smaller escort vessels tasked with convoy duty, where danger was frequent and often sudden.
As the war progressed, naval warfare became increasingly industrialised and technologically complex. Radar, sonar, improved gunnery, and better damage-control procedures improved survivability, but they could not eliminate loss. Ships might be sunk in minutes, damaged beyond repair, or survive multiple attacks only to be lost later in the conflict. For the men who served aboard them, ships were not just weapons of war but floating communities, making each sinking a human as well as a strategic tragedy.
Ship Casualty Logs, 1939–1945
Ship casualty logs record the fate of Royal Navy vessels lost or damaged during the Second World War, documenting incidents such as sinkings, severe damage, collisions, groundings, and losses caused by enemy action or accidents. Compiled by naval authorities, these logs typically note the ship’s name, date and cause of the casualty, location, and, in some cases, information about survivors or total loss. For family historians and researchers, casualty logs provide crucial context for understanding how and when a ship was lost, helping to explain sudden deaths, missing service records, or the abrupt end of a naval career, while also illustrating the scale and intensity of Britain’s maritime war.
| Establishment | Category | Location | Primary Purpose / Role |
|---|---|---|---|
| Scapa Flow | Major Operational Base | Orkney Islands, Scotland | Main anchorage for the Grand Fleet (WW1) and Home Fleet (WW2). |
| Portsmouth Naval Base / HMS Nelson | Major Operational Base | Portsmouth, Hampshire | Primary home port, shipbuilding yard, and fleet administrative hub. |
| Devonport Naval Base / HMS Drake | Major Operational Base | Plymouth, Devon | Major repair dockyard and Western Approaches support base. |
| Chatham Dockyard / HMS Pembroke | Major Operational Base | Chatham, Kent | Major home port, dockyard, and manning depot for North Sea and Medway fleets. |
| Rosyth Dockyard | Major Operational Base | Firth of Forth, Scotland | Refitting dockyard supporting North Sea patrols and battlecruisers. |
| Alexandria Fleet Base | Major Operational Base | Alexandria, Egypt | Operational headquarters for the Mediterranean Fleet (WW2). |
| HMS Dolphin | Major Operational Base | Gosport, Hampshire | Operational headquarters, depot, and training base for the Submarine Service. |
| HMS Vivid (Devonport Barracks) | Manning Depot | Devonport, Plymouth | Primary manning depot for the Plymouth Division (renamed HMS Drake in 1934). |
| HMS Vivid I | Manning Depot | Devonport, Plymouth | Seamanship and signals school. |
| HMS Vivid II | Manning Depot | Devonport, Plymouth | Accounting and depot for stoker and engine room ratings. |
| HMS Vivid III | Manning Depot | Devonport, Plymouth | Accounting for local patrol, minesweeper, and escort crews. |
| HMS Vivid IV | Manning Depot | Falmouth, Cornwall | Outstation accounting base for coastal forces. |
| HMS Vivid V | Manning Depot | Milford Haven, Wales | Outstation accounting base for escort and patrol hubs. |
| HMS Ganges | Youth & Seaman Entry | Shotley, Suffolk | Primary land-based training establishment for boy seamen (aged 15-18). |
| HMS St Vincent | Youth & Seaman Entry | Gosport, Hampshire | Primary youth and junior entry seaman training establishment. |
| HMS Impregnable | Youth & Seaman Entry | Devonport, Plymouth | Main parent establishment for boy seaman entrants. |
| HMS Impregnable I | Youth & Seaman Entry | Devonport, Plymouth | Headquarters, basic discipline, and classrooms for boy ratings. |
| HMS Impregnable II | Youth & Seaman Entry | Devonport, Plymouth | Seamanship, rigging, and small-boat handling instruction hulk. |
| HMS Impregnable III | Youth & Seaman Entry | Devonport, Plymouth | Physical training facilities and medical depot. |
| HMS Collingwood | Seaman Entry & Recruit | Fareham, Hampshire | Induction base for new recruits and radar/wireless instruction (WW2). |
| HMS Royal Arthur | Seaman Entry & Recruit | Skegness, Lincolnshire | Requisitioned holiday camp used as a wartime basic training depot (WW2). |
| HMS Defiance | Gunnery, Torpedo & Mining | Devonport, Plymouth | Torpedo, mining, and electrical engineering parent school. |
| HMS Defiance I | Gunnery, Torpedo & Mining | Devonport, Plymouth | Main command offices and lecture halls. |
| HMS Defiance II | Gunnery, Torpedo & Mining | Devonport, Plymouth | Mining, mine-laying, and deep-sea diving school. |
| HMS Defiance III | Gunnery, Torpedo & Mining | Devonport, Plymouth | Submarine workshops, wireless telegraphy, and electrical school. |
| HMS Defiance IV | Gunnery, Torpedo & Mining | Devonport, Plymouth | Overflow accommodation and classroom hulk. |
| HMS Excellent | Gunnery, Torpedo & Mining | Whale Island, Portsmouth | Principal naval gunnery school. |
| HMS Excellent II | Gunnery, Torpedo & Mining | Portsmouth area | Anti-aircraft and light weaponry training facility. |
| HMS Glendower | Gunnery, Torpedo & Mining | Abersoch, Wales | Wartime land-based gunnery training depot. |
| HMS Vernon | Gunnery, Torpedo & Mining | Portsmouth, Hampshire | Main torpedo development, mine warfare, mine disposal, and diving school. |
| HMS Mercury | Signals & Tactical | Leydene, Hampshire | Central Signals and Radar School for communications and radar instruction. |
| HMS Western Isles | Signals & Tactical | Tobermory, Isle of Mull, Scotland | Headquarters ship and anti-submarine warfare "work-up" school for escort ships. |
| HMS Ferret | Signals & Tactical | Londonderry, Northern Ireland | Major convoy escort operational base and anti-submarine school. |
| HMS Daedalus | Fleet Air Arm | Lee-on-Solent, Hampshire | Headquarters and premier airfield for the Fleet Air Arm. |
| HMS Condor | Fleet Air Arm | Arbroath, Scotland | Major naval air station and Fleet Air Arm engineering school. |
| HMS St Angelo | Overseas Base | Grand Harbour, Malta | Fortress base and fleet headquarters for the Mediterranean Fleet. |
| HMS Rooke | Overseas Base | Gibraltar | Strategic command base securing the entrance to the Mediterranean. |
| HMS Sultan | Overseas Base | Singapore | Primary naval base, dry docks, and fleet repair station in the Far East (prior to 1942). |
| HMS Lanka | Overseas Base | Colombo, Ceylon (Sri Lanka) | Operational headquarters and base for the Eastern Fleet. |
| HMS Highflyer | Overseas Base | Trincomalee, Ceylon (Sri Lanka) | Strategic deep-water naval base and repair facility for the Eastern Fleet. |