MBT British motor torpedo boat HMS "Dark Agressor" P1102 (1954) – "Dark" class P1101–1120 – Construction plan Scale 1:100 (10.11.014)

The British motor torpedo boat HMS Dark Aggressor (P1102) was the second vessel of the Dark class (Admiralty Type A), a series of 18 fast patrol boats that entered service with the Royal Navy between 1954 and 1958. These boats were unique in that they were the only diesel-powered fast patrol boats in the Royal Navy.

Characteristics of HMS Dark Aggressor (P1102)

Year of construction: 1954

Builder: Saunders-Roe, Beaumaris

Dimensions:

Length: 20.4 m (between perpendiculars) / 21.8 m (overall)

Beam: 5.9 m

Draught: 1.8 m

Displacement:

Standard: 50 tonnes

Fully loaded: 64 tonnes

Engine:

Propulsion: 2 × Napier Deltic 18-cylinder two-stroke diesel engines

Power: 5,000 hp

Speed: Up to 40 knots (74 km/h)

Range: Approximately 1,000 nautical miles (1,850 km) at 20 knots

Crew: 15

Armament

Depending on mission configuration:

As a motor torpedo boat (MTB):

4 × 533 mm torpedo tubes

1 × 40 mm Bofors L/60 Mk.3 gun

• As a motor gunboat (MGB):

  1 × 4.5-inch (114 mm) Mk.1gun 1 × 40 mm Bofors L/60 Mk.3 gun

This flexibility enabled the Dark-class to switch rapidly between different role configurations, depending on operational requirements.

Service history

Launch: 9 December 1954

In service: 1955

Decommissioned: 1961

Sold: 3 October 1961

Fate: Scrapped

Following her decommissioning, HMS Dark Aggressor was sold and scrapped in 1961.

Specifications: