HMAS Sheean (SSG 77)
_at_Pearl_Harbor_in_July_2014.JPG)
Sheean at Pearl Harbor in July 2014
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| History | |
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 Australia
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| Name: | Sheean |
| Namesake: | Ordinary Seaman Edward "Teddy" Sheean |
| Builder: | Australian Submarine Corporation |
| Laid down: | 17 February 1994 |
| Launched: | 1 May 1999 |
| Commissioned: | 23 February 2001 |
| Motto: | "Fight On" |
| Status: | Active as of 2016 |
| Badge: |  |
| General characteristics | |
| Class and type: | Collins-class submarine |
| Displacement: |
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| Length: | 77.42 m (254.0 ft) |
| Beam: | 7.8 m (26 ft) |
| Draught: | 7 m (23 ft) at waterline |
| Installed power: | 3 × Garden Island-Hedemora HV V18b/15Ub (VB210) 18-cylinder diesel motors, 3 × Jeumont-Schneider generators (1,400 kW, 440-volt DC) |
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| Range: |
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| Endurance: | 70 days |
| Test depth: | Over 180 m (590 ft) (actual depth classified) |
| Complement: |
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| Notes: | The sonars and combat system are in the process of being updated across the class, to be completed by 2010. These characteristics represent the updated equipment. |
HMAS Sheean (SSG 77) is the fifth of six Collins-class submarines operated by the Royal Australian Navy (RAN).
Named for Ordinary Seaman Edward Sheean—the only submarine of the class to be named for an enlisted sailor—the boat was laid down in 1994 and launched in 1999. Sheean and sister boat Dechaineux were modified during construction as part of the "fast track" program—an attempt to fix the problems affecting the Collins class, and put at least two fully operational submarines in service before the last Oberon-class submarine was decommissioned.
The Collins class is an enlarged version of the Västergötland class submarine designed by Kockums. At 77.42 metres (254.0 ft) in length, with a beam of 7.8 metres (26 ft) and a waterline depth of 7 metres (23 ft), displacing 3,051 tonnes when surfaced, and 3,353 tonnes when submerged, they are the largest conventionally powered submarines in the world. The hull is constructed from high-tensile micro-alloy steel, and are covered in a skin of anechoic tiles to minimise detection by sonar. The depth that they can dive to is classified: most sources claim that it is over 180 metres (590 ft),
The submarine is armed with six 21-inch (530 mm) torpedo tubes, and carry a standard payload of 22 torpedoes: originally a mix of Gould Mark 48 Mod 4 torpedoes and UGM-84C Sub-Harpoon, with the Mark 48s later upgraded to the Mod 7 Common Broadband Advanced Sonar System (CBASS) version.
Each submarine is equipped with three Garden Island-Hedemora HV V18b/15Ub (VB210) 18-cylinder diesel engines, which are each connected to a 1,400 kW, 440-volt DC Jeumont-Schneider generator. The electricity generated is stored in batteries, then supplied to a single Jeumont-Schneider DC motor, which provides 7,200 shaft horsepower to a single, seven-bladed, 4.22-metre (13.8 ft) diameter skewback propeller. The Collins class has a speed of 10.5 knots (19.4 km/h; 12.1 mph) when surfaced and at snorkel depth, and can reach 21 knots (39 km/h; 24 mph) underwater. The submarines have a range of 11,000 nautical miles (20,000 km; 13,000 mi) at 10 knots (19 km/h; 12 mph) when surfaced, 9,000 nautical miles (17,000 km; 10,000 mi) at 10 knots (19 km/h; 12 mph) at snorkel depth. When submerged completely, a Collins-class submarine can travel 32.6 nautical miles (60.4 km; 37.5 mi) at maximum speed, or 480 nautical miles (890 km; 550 mi) at 4 knots (7.4 km/h; 4.6 mph). Each boat has an endurance of 70 days.
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