Challenger class spec
Only Sodermanland--1989.and Ostergotland--1990 are in active service.
The Ostergotland submarine equipped with Stirling AIP-air independent propulsion system was delivered to the Swedish Navy in October 2004.
Specifications
Crew 20 . Length 60.5 m 198-ft.Max Speed 20 kts
Full Displacement 1,500 tons .Number of Weapons 18
Span 6.1 m 20-ft.Torpedo Tubes 9
Equipment.Powerplant Stirling AIP
The Sodermanland-class, like the Vastergotland-class, has 6x 533mm torpedo tubes and 3x400mm torpedo tubes and can accommodate up to 18 torpedoes or 22 mines.
The 212A Class submarine stands out due to its significantly longer diving periods than with all other conventional submarines. The longer diving periods are based on a new kind of propulsion system that is not dependent on outer air. In a chemical process, fuel cells convert oxygen and hydrogen into electrical energy. The power produced in this manner provides the propeller engine and all electrical systems on board with energy during the submerged operation.

However the need to come repeatedly to periscope depth to recharge the batteries using the diesel engine.Conventional modem submarines the indiscretion ratio ranges typically from 7 to 10% on patrol at 4 knots, and 20 to 30% in transit at about 8 knots.
With the MESMA system the AM-2000 submarine can stay down in underwater patrol three times longer than the CM-2000.
Due to a modernization program applied to the remaining boats the class has been re-named Sodermanland. The Sodermanland class submarines have a stretched hull compared to Vastergotland class among other improvements.Västergötland (Södermanland) (A 17)
The Stirling section adds 12 meters to the submarine length and is installed aft of the boat's tower.
Snorting is actually British term....whereas snorkelling is American termOriginally posted by Shotgun:Lol!! "without snorting"
Its "Snorkeling"... not snorting...
However there is nothing in the reports that says we wont be adding AIP with them. It just named the 2 hulls we will be buying and gave a time frame that we will be taking to upgrade them.Originally posted by zquek:Hey...
Face it
The Vastergotland sub and Osterland Sub is not AIP equipped. Its confirmed by Kockums.
Sodermanland is in Swedish service.
Well...what to do...we follow the british naval tradition...another is the tower of the submarine....the american call it the sail.....the brits call it the fin....Originally posted by Shotgun:wah lao... snorting sound sooo.... uncouth?
Which is interesting because not everyone in the SAF uses the british "Leftentant" instead of the German/US way of saying it.Originally posted by riken1974:Well...what to do...we follow the british naval tradition...another is the tower of the submarine....the american call it the sail.....the brits call it the fin....