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MV SAS Assegaai (S99)

Historic African Maritime Vessel

Country South Africa
Type submarine
Water Body Atlantic Ocean
Service Period 1970 - 2003
Service Timeline
1970
2003
1900 1962.5 2025
33
Years in Service
Museum
Current Status
SAS Assegaai (S99)
Museum

Overview

SAS Assegaai (S99) was a Daphné-class submarine of the South African Navy, launched in 1970 and commissioned in 1971. Originally named SAS Johanna van der Merwe, it served until being decommissioned in 2003. It is now preserved as a museum ship in Simon’s Town, and is the only one of its class retained for exhibition.

Detailed History

Laid down in 1969 at the Dubigeon-Normandie shipyard in France, SAS Assegaai was one of the first submarines to serve in the South African Navy. She was launched in July 1970 and commissioned in August 1971, then spent much of her career based at Simon’s Town. During the South African Border War, the submarine took part in clandestine operations, including a 1975 deployment to Angolan waters. She underwent several refits to add fuel capacity and upgrade combat systems during the 1980s and 1990s. Renamed from SAS Johanna van der Merwe to SAS Assegaai in the late 1990s, she was decommissioned in November 2003. In 2010 the vessel was preserved as the Assegaai Submarine Museum. After restoration efforts, she was moved to a permanent display at the Simon’s Town Naval Museum in July 2024. The submarine is about 57.8 meters long with a 6.75 m beam, displacing roughly 860 tons on the surface (1034 tons submerged). It carried a crew of about 51 (6 officers and 45 enlisted) and was armed with 12 torpedoes; it had a range of roughly 4,300 nautical miles at snorkel speed.

Key Highlights

Era Pre-1980 African Maritime
Region ocean
Historical Age 55 years
Documentation Verified Historic Record

Technical Specifications

Basic Information

Vessel Name SAS Assegaai (S99)
Vessel Type submarine
Country/Flag South Africa
Water Body Atlantic Ocean (Ocean)

Service History

Launch Year 1970
Decommission Year 2003
Current Status Museum

Physical Dimensions

Length 57.80 meters
Beam (Width) 6.75 meters
Displacement 860 tons

Capacity Information

Crew Capacity 51 personnel
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