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Forward Accommodation Forward Torpedo Tubes

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Forward Torpedo Compartment

There are eight Internal Torpedo Tubes mounted horizontally. Each Torpedo Tube is shut by means of a front door. A hull fairing shutter is connected to the front door so as to maintain the Hydrodynamic Shape of the submarine.


View towards the eight forward torpedo tubes

The large discs are the Inner Doors of the torpedo tubes.

The big brass tubes attached to the inner doors are Pneumatic Rams, to launch the torpedoes out of the tubes.

The red devices between the tubes are Interlocks which prevent an outer door from opening when an inner door is open, and vice versa.

The many small green 'things' between the tubes are Grease Nipples which feed the grease to the operating rams and hinges of the lateral and forward torpedo tubes.

The grey cables going into each tube below each brass pneumatic ram send information on course offset and running depth to the torpedoes before firing, and also keep the torpedo batteries fully charged.

Getting a torpedo on board was not a trivial activity

Loading a torpedo on board SAS Assegaai's sister submarine, the SAS Emily Hobhouse for an exercise firing, 1 March 1997.

Preparing to load E15 Combat Heavy weight torpedo's on SAS Assegaai's sister submarine, the SAS Emily Hobhouse for an exercise firing on MS Kanutka.

Pre Load Torpedo Checks. Verify correct pistol fits into warhead. — with Michael White.


Submarine Base Workshop Weapons Department rigging up external loading equipment. — with Gary Solomon and Colin Pike

Aligning inner and outer cradles. — with Gary Solomon.

E15 Torpedo propellers

The E15 torpedo weighed 1650kg and carried 300kg of high explosives.

Designed in 1955, the E15 torpedo had a range of 12,000 meters and travelled underwater at 25 knots (46km/hour) on power supplied by Nickel-Cadmium batteries.

The torpedo was 5.9 meters in length.



Lifting Band off.



Check all OK for first torpedo.

First torpedo enters through torpedo hatch.

Torpedo is slowly lowered below along the guiding cradle.


First torpedo entering through the torpedo hatch. — with Elton Clint

Torpedo on main cradle. — with Guido Werner Perold.

Lower torpedo to deck.

Pins and rings out hoist main cradle. — with Chris Grove, David Flounders, Andrew Bryan Ramsay, Dirk Visser and Gary Kretschmer.

Remove PR (Pneumatic Ram) — with Colin Cloete.

Traversing Main Cradle. — with Guido Werner Perold

Putting Bicycle and Tie Rods on.

Torpedo in tube, connect umbilical. — with Shaun Dempsy

 (Images courtesy of: Steve Hattingh)

The section at frame 110 shows the forward diving plane ram and diving planes


  • Length 7.562 m

  • Inside diameter 600mm

Details of the torpedo launching ram


Submarine Trim  There are three requirements for a submarine to ne trim:
  • Its weight must be equal to the upward thrust, that is , the submarine must have neutral buoyancy
  • It mist have no list
  • It must have no longitudinal inclination