HMS Saga (P257)

From Wikipedia, the free encyclopedia
Jump to: navigation, search
HMS Saga.jpg
HMS Saga
Career (UK) Royal Navy Ensign
Name: HMS Saga
Ordered: 7 April 1943
Builder: Cammell Laird & Co Limited, Birkenhead
Laid down: 5 April 1944
Launched: March 14, 1945
Commissioned: 14 June 1945
Fate: Sold to the Portuguese Navy in October 11, 1948, and renamed NRP Náutilo
Badge:
SAGA badge-1-.jpg
Career (Portugal)
Name: NRP Náutilo
Acquired: 11 October 1948
Fate: Placed on disposal list in 1969
General characteristics
Class and type: S-class submarine
Displacement: 814 long tons (827 t) surfaced
990 long tons (1,010 t) submerged
Length: 217 ft (66.1 m)
Beam: 23 ft 9 in (7.2 m)
Draught: 14 ft 1 in (4.3 m)
Installed power: 1,900 bhp (1,400 kW) (diesel)
1,300 hp (970 kW) (electric)
Propulsion: 2 × diesel engines
2 × electric motors
Speed: 14.75 knots (27.32 km/h; 16.97 mph) surfaced
9 knots (17 km/h; 10 mph) submerged
Range: 7,500 nmi (13,900 km; 8,600 mi) at 10 knots (19 km/h; 12 mph) surface; 120 nmi (220 km; 140 mi) at 3 knots (5.6 km/h; 3.5 mph) submerged
Test depth: 350 feet (106.7 m)
Complement: 48
Armament: 6 × bow 21 in (533 mm) torpedo tubes
1 × 4-inch (102 mm) deck gun

HMS Saga was a S-class submarine of the third batch built for the Royal Navy during World War II. She survived the war and was sold to Portugal.

Design and description[edit]

The last 17 boats of the third batch were significantly modified from the earlier boats. They had a stronger hull, carried more fuel and their armament was revised. The submarines had a length of 217 feet (66.1 m) overall, a beam of 23 feet 9 inches (7.2 m) and a draft of 14 feet 1 inch (4.3 m). They displaced 814 long tons (827 t) on the surface and 990 long tons (1,010 t) submerged.[1] The S-class submarines had a crew of 48 officers and ratings. They had a diving depth of 350 feet (106.7 m).[2]

For surface running, the boats were powered by two 950-brake-horsepower (708 kW) diesel engines, each driving one propeller shaft. When submerged each propeller was driven by a 650-horsepower (485 kW) electric motor.[3] They could reach 14.75 knots (27.32 km/h; 16.97 mph) on the surface and 9 knots (17 km/h; 10 mph) underwater.[1] On the surface, the third batch boats had a range of 7,500 nautical miles (13,900 km; 8,600 mi) at 10 knots (19 km/h; 12 mph) and 120 nmi (220 km; 140 mi) at 3 knots (5.6 km/h; 3.5 mph) submerged.[2]

Saga was armed with six 21-inch torpedo tubes in the bow. She carried six reload torpedoes for a grand total of a dozen torpedoes. Twelve mines could be carried in lieu of the torpedoes. The boat was also equipped with a 4-inch (102 mm) deck gun.[1]

Construction and career[edit]

HMS Saga built by Cammell Laird and launched on March 14, 1945. Thus far she has been the only ship of the Royal Navy to bear the name Saga, after the Norse Sagas. Built as the Second World War was drawing to a close, she did not see much action. On 10 February 1946 Saga collided with, and sank, the trawler Girl Lena in the English Channel. Saga was sold to the Portuguese Navy in 1948 and renamed NRP Náutilo.[4]

Notes[edit]

  1. ^ a b c Chesneau, p. 52
  2. ^ a b McCartney, p. 7
  3. ^ Bagnasco, p. 110
  4. ^ HMS Saga, Uboat.net

References[edit]