River-class mine hunter
The River-class mine hunter is a class of ships ordered in 1978 as research vessels to be operated by the South African Navy for the Department of Transport to circumvent the arms embargo in place at the time. They were originally named Navors (Afrikaans for "research") and numbered 1 to 4
|Builders:||Abeking & Rasmussen and Sandock-Austral|
|Operators:||South African Navy|
|Preceded by:||Ton-class minesweeper|
|Displacement:||390 t (380 long tons)|
|Length:||48.0 m (157.5 ft)|
|Beam:||8.5 m (27.9 ft)|
|Draught:||2.5 m (8.2 ft)|
|Speed:||16 kn (30 km/h; 18 mph)|
|Range:||2,000 nmi (3,700 km; 2,300 mi) at 13 kn (24 km/h; 15 mph)|
The first ship Navors I was shipped to Durban from Germany in June 1980 for fitting out, shortly followed by the second. The last pair were built in Durban. The vessels were painted blue with white upperworks and formed the First Research Squadron. They were renamed in 1982 after South African rivers - (Umkomaas, Umhloti, Umgeni, Umzimkulu) but continued to fly the national flag and not the naval ensign. The prefix RV was only changed to SAS on 3 February 1988 when they were formally accepted as naval ships.
|SAS Umkomaas||RV Navors I||M1499||13 January 1981||Named after the Umkomaas River|
|SAS Umhloti||RV Navors IV||M1212||15 December 1981||Named after Umhloti River close to Durban, South Africa|
|SAS Umgeni||RV Navors II||M1213||1 March 1981||Named after Umgeni River|
|SAS Umzimkulu||RV Navors III||M1142||30 October 1981||Named after Umzimkulu River|
- Saunders 2002, p. 639.
- Wessels, Andre. "The South African Navy during the years of conflict in Southern Africa 1966-1989" (PDF). Archived from the original (PDF) on December 2, 2013. Retrieved August 14, 2014.
- "Mine Warfare Forces". Retrieved August 14, 2014.
- Saunders, Stephen (2002). Jane's Fighting Ships 2002–2003. Coulsdon, UK: Jane's Information Group. ISBN 0-7106-24328.