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Diving the Cape Peninsula and False Bay/SAS Gelderland

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The dive site SAS Gelderland is a recent wreck in the Karbonkelberg headland area on the Atlantic seaboard of the Cape Peninsula, near Cape Town in the Western Cape province of South Africa.

Understand[edit]

Map of the dive site at the wreck of the SAS Gelderland at Duiker Point on the Cape Peninsula

Position[edit]

  • S34°02.070’ E018°18.180’ 1 SAS Gelderland wreck

About halfway between the rock known as "Die Middelmas", off the Oude Schip point to the north, and the offshore rock at Duiker point to the south.

There are two main sections of wreckage known. The central section of the hull with the engine room is at the position given, and the bow is some distance away to the south.

This site is in a Marine Protected Area (2004). A permit is required. The site is within the Karbonkelberg restricted zone.

Name[edit]

The SAS Gelderland in Table Bay
View from the starboard quarter
Quarterdeck hull section of the SAS Gelderland with davit and hatch to the engine room

The "SAS Gelderland" was a Ford class Seaward Defense Boat, formerly the HMS Brayford, renamed on 30th August 1954. The ship was named after the Dutch battleship that transported Paul Kruger to Europe in 1900. The SAS Gelderland, was scuttled at 10 am on 21st December 1988, North West of Duiker Point, by demolition trials.

Specifications
Displacement 160 tonnes
Length over all 36 m
Beam 6 m
Draft 1.5 m
Engine power  ? Hp
Engines 3
Screws 3
Speed  ? knots
Endurance  ? n. miles at ? knots
Complement  ?
Armament  ?

Depth[edit]

Maximum depth on the sand is 35 m, top of wreckage and nearby reef generally below 30 m

Topography[edit]

The vessel was about 40 m long but the main section of wreckage is now only about 20 m as the bow and stern sections were blown right off when scuttling it. The midships section lies moderately intact and upright on the sand at 35 m. There is a reef of huge boulders with some great reef life to the north and a pinnacle which rises to 12 m is fairly close by. Unfortunately the superstructure and funnels are gone and much of the hull has filled with sand. The reef to the south is low profile, not much more than a metre or so above the sand. The bow section is said to lie about 80 m to the south of the main wreckage. There is a stockless anchor near to the midships section on the reef, probably the section to the south, but the exact position is not known.

Geology: Sand bottom with outcrops of granite reef of the late Pre-Cambrian Peninsula pluton.

Conditions[edit]

The site is exposed to south west and north west swell end winds, but is reasonably sheltered from south easterly winds. The site is diveable in low to moderate swell height as long as the wave period is short. The site is usually at it's best in summer but there may also be occasional opportunities in autumn and early winter.

This is an area which sometimes has upwellings, caused by the south easterly wind, resulting in cold clean water, and which may be followed by plankton blooms, which will reduce visibility again.

If the south easter blows strongly, the trip back will be wet and uncomfortable.

Get in[edit]

SAS Gelderland wreck

The site can only be reached by boat. It is about 7.5 km from the slipway at Hout Bay harbour.

See[edit]

Marine life[edit]

(general indication of biodiversity: Fish, Invertebrates, algae)

Features[edit]

Fairly recent wreckage of small naval vessel.

Photography[edit]

(recommendations)

Routes[edit]

No particular routes recommended. The site is small.

Stay safe[edit]

Hazards[edit]

Cold water. Nitrogen narcosis.

Skills[edit]

Ability to deploy a DSMB is recommended. Training/certification to dive below 30m is required.

Equipment[edit]

Reel with DSMB, Light, Nitrox and Dry suit recommended.

Nearby[edit]

Back to Diving the Cape Peninsula and False Bay#Maori Bay

This dive guide to SAS Gelderland is a usable article. It has information on location and equipment as well as some complete entries on what to see. An adventurous person could use this article, but please feel free to improve it by editing the page.