Coastal Forces was a division of the Royal Navy established during World War II. It consisted of small coastal defence craft which the Navy designated with names such as: Motor Launch, High Speed Launch, air-sea rescue, Motor Gun Boat and Motor Torpedo Boat. It did not include landing craft, trawlers or purpose-built minesweepers. Other Navies operated equivalent boats, but classified and named them somewhat differently.
This article attempts to pull together, for comparative purposes, some statistics concerning the coastal forces of different navies. It starts with the above British definition of "Coastal Forces" and attempts to identify the equivalent boats in other navies.
See main article: Coastal Forces of the Royal Navy.
| Type | Designation | Built | Lost | Designed purpose | |
|---|---|---|---|---|---|
| Motor Launches | ML, HDML ASR | Harbour Defence Motor Launches (HDML) and submarine chasing or for armed high speed Air Sea Rescue. | |||
| Motor Gun Boats | MGB | ||||
| Steam Gun Boats | SGB | 7 | 1 | Hunting down German E-boats | |
| Motor Torpedo Boats | MTB |
| Type | Designation | Built | Lost | Designed purpose | |
|---|---|---|---|---|---|
| PT boats | PT- | ||||
| Submarine chasers | SC- and PC- |
| Type | Designation | Built | Lost | Designed purpose | |
|---|---|---|---|---|---|
| Schnellboot (E-boats) | S- | ||||
| R boat |
| Type | Designation | Built | Lost | Designed purpose | |
|---|---|---|---|---|---|
| MAS-boat | |||||
| Motoscafo Silurante | 36 |
Post war there seemed to be no need for small coastal force vessels. They were generally withdrawn and their functions taken over by larger corvettes, frigates, and destroyers. A few remained in service with Third World navies. The RN's last boats built in any number were the Dark-class fast patrol boats of the mid-1950s; Coastal Forces was reduced in 1957 to a few vessels.
In time, the need for smaller vessels re-asserted itself, as in this experience of the Royal Australian Navy:
Coastal boats reappeared in navies around the world now generally adapted to the need to "patrol" and designated as "patrol boats".
Following is a list of notable surviving coastal craft from World War II.
| Vessel MGB81 | Country Great Britain | Type Motor Gun Boat | Design British Powerboat Company | Built 1942 | In the care of Portsmouth Naval Base Property Trust | Notes | |
|---|---|---|---|---|---|---|---|
| Norway | submarine chaser | Only remaining World War II submarine chaser with intact armament [1] | |||||
| S-130 | Germany | E-boat | 1943 | British Military Powerboat Trust [2] | Only surviving German E-boot. Participated in Exercise Tiger and attacks on the D-day invasion fleet. | ||
| PT 617 | US | PT-boat | 80-foot Elco | Battleship Cove Museum [3] | Only completely restored 80-foot Elco PT-boat in existence [4] | ||
| PT 796 | US | PT-boat | 78-foot Higgins | Battleship Cove Museum [5] | restored [6] | ||
| MTB 102 | UK | MTB | Private venture | 1937 | MTB 102 Trust | capable of 48 knots unladen |