Good afternoon, gentlemen.
My entry. I am deeply nostalgic of the neat lines of the English submarines of the Swiftsure class, and also (but slightly less) of the American Sturgeon class. So my SSN reflexes this appeal to this SSNs, with concessions to the X type rudder for better maneouvrability in coastal waters, and also a more modern sail.
With the change of the percived menace, the Admiralty decided to create a long range submarine squadron for taking care a vast amount of the western Indian Ocean, from de Strait of Hormuz, to the Cape, and obviusly, the Horn of Africa. For long time in station a nuclear powered vessel was required. The resultant submarine was the Battle II class, the first one, Lemnos was comissioned in December 1996.
Credits: The general form, anechoic "mammalian" tiles, and aerials are from DP previous works. Sometimes, "stealing" ideas (and parts!) is a genuine form of praise! Thanks, Darth Panda! Cheers!
Type: Nuclear-powered attack submarine
4,300 t surfaced
4,850 t submerged
Length: 87.1 m
Beam: 9.8 m
Draught: 8.5 m
1 Pressurized water reactor
Speed: 26 knots (48 km/h; 30 mph) submerged
Test depth: 250 fathoms
6 × 21 533 mm amidship torpedo tubes with up to 18 reload weapons.
Typical war load: 4 Sub-Harpoon, and 20 Mk.48 ADCAP torpedos. The torpedos can be parcially replaced by mines.
A double hulled submarine, with a five-compartment arrangement , including the bow compartment, operations compartment, reactor compartment, auxiliary machinery room no. 2, and the engine room. The hull is constructed from a high-tensile micro-alloy steel. With a large GRP sail, which permitted a second periscope and additional intelligence-gathering masts. The fairwater planes are placed at the bow and are retractable. The entire class had the Raytheon Harmonic Power Conditioners which eliminated an electrical bus noise problem. Noise was further reduced covering the hull with anechoic "mammalian" tiles.
Pilkington search periscope attack periscopes.
Kelvin Hughes Type 1007 surface search radar
AN/BQQ-5 sonar sistema based in the AN/BQS-13 spherical sonar array with side array components too, and AN/UYK-44 computer. 104 hydrophone hull array arranged in several locations. And two towed arrays: the TB-12 (later replaced by the TB-16) and TB-23 or TB-29, which are dispensed from the belly. Easily upgradeable commercial off-the-shelf (COTS) processing systems, allowing the introduction of much more sophisticated algorithms compared to earlier sonars.
Combat system was a Modified Raytheon CCS Mk2 (AN/BYG-1).
Countermeasures include a Condor CS-5600 ESM intercept and warning unit, and two SSE decoys. Marconi SDG-1802 degaussing system, a receive-only Link 11 combat information exchange datalink.
PS: I think that the green livery of the German built, Israel Navy SSK is nice, but I don´t know if that color is a suitable one for less confined waters like the Indian Ocean.