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Ryan
05-11-2009, 09:57 PM
(taken from www.saairforce.co.za) all images copyright Dean Wingrin

US Submarine Exercises with SA Navy

By Dean Wingrin

The Los Angeles-class nuclear powered attack submarine USS San Juan (SSN 751) pulled into the Simon’s Town naval dockyard in Cape Town on 4 November 2009.

The purpose of the first US submarine visit to South Africa is to participate in Exercise Flower III, a series of joint South African and American naval exercises. The aim of Exercise Flower III is to conduct submarine exercises and at-sea engagements between the submarines of the two countries.

The objectives of the exercise for the South African Navy (SAN) includes interoperability of surface and sub-sea communication, operational testing and evaluation, operator skills and benchmarking the Heroine class submarine.

Commander John Sheehan, representing the US Sixth Fleet, said that the type and class of conventional submarine that the SA Navy uses (Type 209/1400MOD (SA) SSK) is often seen as the wave of the future.

He said: “The differences is that the intent of the submarine and the intent of our (nuclear) submarine is to work slightly differently. This is a unique opportunity to put the two together and find out how they operate in the same environment. It is a wonderful chance for us to learn a lot.”

The exercises will be conducted west of Hout Bay, Cape Town, approximately 50nm off the coast in international waters. The SAN submarine that will be participating with the USS San Juan will be Queen Modjadji (S103). Although the at-sea exercise will only consists of three days, there will be on-shore briefings and debriefings prior to and after the at-sea event.

Under the command of Commander Ollie Lewis, the USS San Juan departed her homeport of Groton, Connecticut in the USA on 1 June this year and transited the Mediterranean before entering the Indian Ocean via the Suez Canal. Her previous stop before South Africa was the Seychelles and the submarine is due to return home before Christmas.

Commander Lewis told the author that he was hoping to learn about SAN tactics, maritime interdiction and interoperability.

There are 140 all-male crewmembers on board the USS San Juan who operate a six-hour on, 12-hour off routine. However, the crew members must still participate in training and drills during their off period. At 110 metres in length and 10m wide, the interior of the submarine consists of three levels. Space is at a premium, but there is still a sizable mess area and even laundry washer and dryer. All meals are made in the small kitchen, including fresh bread daily.

Powered by one nuclear reactor, a diesel generator is also available as a backup.

The USS San Juan is the 40th Los Angeles-class attack submarine and, commissioned in 1988, is the first improved submarine in her class. USS San Juan and all following submarines in the class are quieter; incorporate an advanced BSY -1 sonar suite combat system and the ability to lay mines from their torpedo tubes. They are configured for under-ice operations in that their forward diving planes have been moved from the sail structure to the bow and the sail has been strengthened for breaking through ice. Hence her motto: Technology and Tradition.

Armament includes vertical launch tubes for Tomahawk cruise missiles, Mk 48 torpedoes in four torpedo tubes and Harpoon missiles. The USS San Juan participated in Operation Iraqi Freedom in March 2003, during which she fired 27 Tomahawk missiles, the most launched by a single submarine.

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USS San Juan (SSN 751) off Cape Point

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USS San Juan (SSN 751) flanked by S102 and S103 (SA'n submarines)

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USS San Juan and S103 on approach to Simonstown

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USS San Juan on approach to Simonstown Naval Base entrance

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Tied up at Simonstown Naval Base

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Commander Ollie Lewis (USN)

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The bridge

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Helmsman's station

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Passage

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Main dining area

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Shared bunks - "hotbunk"

Ryan
08-11-2009, 07:10 AM
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Dean - who took these photos said it required four tugs to move the submarine into its berth - it's big!

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Briefing table inside Captain's cabin.

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Starboard torpedo tube

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Inside the torpedo tube

Robotnik123
08-11-2009, 11:24 AM
Cool.

Ever hear the story of how the Russians in exchange for butter offered NZ an old nuclear sub to connect to the power grid? We had to respectfully decline their offer. Another option was an Antonov cargo plane which wasn't accepted either.

Davezj
08-11-2009, 11:41 AM
did you know the british sub fleet do inital testing of there sonar systems in loch goil in scotland.

we stayed in a holiday cottage on the shore of loch goil head and one evening we saw a conning tower go past the window of the cottage i was gobsmaked. it was only 100 yadrs or so from the shore. it is nowonder we never caught any fish from there when we went fishing. the sonar pings would have killed them all.
i was working for thales underwater systems at the time on surface sonar stuff (2087) for frigget's. had i been on the subs sonar project i would have known not to fish the end of the loch and moved more to the mouth of loch past the kink which is a natural trap for the ping it stops it leaving the end of the loch.