SBD-3
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ok guys lets hope for the best that we get whats the 1st choice i.e 214 but just in case what do you think should be the fallback option. here are some that i thought...
1)Collins Class
1)Collins Class
2) Marlin Class SubWhen the Australian government planned the acquisition of their new submarine force, they aimed at a submarine more capable than any existing design in the world. Moreover, they made the bold and daring decision to build the submarines in Australia, a country with no experience of design and construction of submarines.
From the competing contenders Kockums was evaluated as having the most capable submarine design and highest level of technology transfer ability.
Australian Submarine Corporation
Australian Submarine Corporation (ASC) is responsible for the construction and building of the Collins submarines.
Kockums played an integral role in the technology transfer of the design and construction to Australia by utilising its advanced modular construction method.
The diving and safety station on board HMAS Collins.
State-of-the-art
A Collins Class submarine is a long-range, multipurpose patrol submarine capable of both short duration coastal missions, and long-duration open sea defensive and offensive operations. The submarines have a patrol endurance of more than two months, most of the time submerged.
The Collins Class submarines have all the attributes expected of a state-of-the-art submarine, including high manoeuvrability, low signature patterns, high firing rates, and excellent shock endurance.
They are also adapted to the specific environmental conditions and operational profiles applicable to the Royal Australian Navy.
Largest in the world
With a displacement of 3000 tonnes, the Collins Class submarines are the largest, and without a doubt the most advanced and efficient conventional submarines in the world.
HMAS Collins was launched in 1993 and delivered to the Royal Australian Navy in May 1996. The six Collins Class submarines ordered have all been delivered to the Royal Australian Navy.
The launching of HMAS Collins in 1993.
The Collins Class submarine
Technical data
Length over all
77 m
Beam
8 m
Displacement
3000 tonnes
Weapon armament
Six 53 cm bow tubes, positive discharge
Weapons
Positive discharge or swim-out
Propulsion
Single-shaft, diesel-electric
Speed (knots)
10 + surfaced 20 + submerged
Mission
70 days
Hull
Single pressure hull, two pressure tight compartments
Crew
42
3-Gotland ClassFrom the weekly magazine " Le Marin " :
"The French DCN's new star product has been shown for the first time at the Euronaval Fair. This sub follows the Scorpene, whose future now seems compromised because of the growing gap between the DCN and Navantia, its Spanish ex-partner.
The Scorpene, which enjoyes considerable exprt success with sales to the navies of Chile, Malaya, and India, seems to be the first victim of Navantia's decision to develop a strategic partnership with Lockheed Martin to build the new S80 boat which should be bought by the Spanish navy. The S80, whose model was on display at Navantia's stand, is now proposed to foreign navies as a direct competitor of the Scorpene.
This caused the DCN to develop the Marlin, that will be 100% domestically built. The French shipyard goes the whole nine yards to show the gap between the Scorpene and its new product. The influence of the Barracuda-class on the Marlin design emphasized in the dive controls, in the combat system which will resemble the SYCOBS used both aboard the "Le Terrible" SSBN and the new SSNs, and in the possibility to include optronic masts.
Another difference between the Marlin and the Scorpene : the Marlin has been designed to be equipped with an anaerobic module. This could be the Mesma, whose performance has already been tested on land and is now being tested at sea aboard the last Agosta A90B boat that had been sold to Pakistan and is undergoing trials. One striking difference, though, will be that the Pakistani Agosta AIP system will run on ethanol while the Marlin will run on the same gasoil that is used on diesel boats.
DCN stated that the autonomy of its Mesma system, regardless of the type of fuel used, will double a diesel boat's. DCN also says the Mesma's autonomy equal that of the U-214 boats that are equipped with fuel cells, and be easier to refuel. The only limiting fqctor of the Mesma at sea in terms of autnomy should be the boat's capacity to embark liquid oxygen.
Later, the Mesma system could be complemented by a fuell cell with a system producing hydrogen from gasoil, without any need to stock it on board. DCN will probably show a "fuel cell / hydrogen" kit at the next Euronaval fair. The expected result should be to double the performance of current AIP systems.
DCN is currently having talks with the Pakistani navy to sell several Marlins"
4-SodermanlandThe Gotland Class - one of the world's most modern conventional submarine. It is designed and built to meet all possible submarine missions: anti-shipping operations, ASW-missions, forward surveillance, special operations and mine-laying tasks. The Gotland Class can carry a powerful array of wireguided and homing weapons, including newly developed multipurpose homing torpedoes, missiles and mines.
Unique AIP system
The Gotland was the world's first submarine class in operation with an air independent propulsion (AIP) system. The Stirling AIP system, combined with a number of unique features including overall low signatures, extreme shock resistance and a powerful combat system, provides the ultimate in non-nuclear submarine technology.
Three submarines of the Gotland class, HMS Gotland, HMS Uppland and HMS Halland are now in service with the Royal Swedish Navy.
Combat system
The Gotland Class combat system and sensor suite are carefully selected for submarine warfare of today and for the future. Detection, identification, weapon launching and control are performed by the combat system at distances well beyond the horizon.
On board, the complete suite of equipment incorporates the latest of technologies. There is, for example, an innovative, newly developed sonar and fire control system incorporating powerful new means for target motion analysis for the determination of target course, speed and position.
The combat system integrates data processing with weapon control. All types of sensors, navigation and weapon control equipment, integrating consoles and tactical programmes are included in the system.
Modular construction
In the submarine production area, Kockums pioneered the modular construction concept, which is today widely used by submarine manufacturers. Kockums has refined this technique over the years and is today launching submarines, which are virtually completely outfitted and pre-tested.
Full control: one-man steering.
The machine control station.
Torpedo loading - fast and safe.
Small crew
The use of automation and remote control has resulted in crew of only 25. For instance, only one operator is needed to steer the submarine in depth and course. When ordered the steering will be done by computer. The small crew has had a very favourable impact on accommodation standards and operating costs.
The Gotland submarine from stem to stern
The lower level of the forward compartment contains the torpedo room, with weapons handling system and reload racks, a battery space and the auxiliary machinery space.
The forward upper level contains the control room, a radio room, an electronic equipment space, living quarters, mess and galley area, toilets and washrooms.
The lower level of the aft compartment contains diesel generator sets and a second battery space.
The upper level contains the electrical equipment space with propulsion control consoles, inverters, converters, alternators, electrical control consoles and battery monitoring equipment.
The after compartment also contains the Kockums Stirling AIP system for air independent power-generation, the main motor and auxiliaries.
The sail contains a combined search and attack periscope, masts for communications and surveillance, radar antenna and the air induction mast. The periscope is the only hull-penetrating mast.
The Gotland Class employs a slow-turning propeller. Four control surfaces in X-configuration are fitted aft, which together with two on the sail provides excellent manoeuvrability.
The ability of a submarine to remain undetected is by far its most important feature. Kockums is a world leader in the field of submarine stealth.
The hull design and various types of surface coatings minimize the risk of detection by active sonar.
The Gotland Class submarine
Technical data
Length over all
60 m
Beam
6.2 m
Displacement
1500 tons
Weapon armament
Four 53-cm bow tubes, Two 40-cm bow tubes
Weapons
Positive discharge or swim-out
Propulsion
Single-shaft, diesel-electric and Stirling Air Independent Propulsion
Submerged endurance
Weeks
Hull
Single pressure hull, two pressure tight compartments
Crew
25
HMS Gotland managed to snap several pictures of the USS Ronald Reagan during a wargaming exercise in the Pacific Ocean, effectively "sinking" the aircraft carrier. The exercise was conducted to evaluate the effectiveness of the US Fleet against diesel-electric submarines, which some have noted as severely lacking.
5-A 26 type (may be a JV)The Södermanland Class consists of the submarines HMS Södermanland and HMS Östergötland. They were originally launched in 1987-1990 as two of the four boats in the Västergötland (Vgd) Class.
The submarines have been modernized at Kockums, including the installation of the Stirling AIP system.
HMS Södermanland was relaunched in 2003 and HMS Östergötland in 2004.
Stirling AIP section
The submarines were cut and lengthened by the insertion of the Stirling AIP section. This section, fully fitted and equipped before installation, contains two Stirling units, liquid oxygen (LOX) tanks and electrical equipment.
Only AIP submarines
When the Södermanland Class has been completed, all operational submarines in the Swedish fleet will have Stirling air-independent propulsion - something quite unique among the world's navies equipped with conventional submarines!
The fully equipped Stirling AIP section is inserted aft of the tower.
Equipped for operation in warmer waters
Swedish submarines are designed to operate mainly in colder northern waters. Higher water temperatures can lead to problems with high ambient temperatures and high levels of relative humidity on board. An important aspect of the Södermanland Class conversion is that the submarines will now be equipped to undertake international peacekeeping missions in warmer and more saline waters. In practice this involves fitting the boats with a completely new refrigeration system employing heat exchangers rather than the direct seawater cooling previously used.
Command and control system, stealth
The command and control system of the Södermanland Class submarines is being updated to the latest standards and the boats' stealth properties are being further refined. The submarines are also being equipped with a new air-lock for divers.
Two new submarines
With the conversion of the Södermanland Class, the Swedish Navy will get two practically new submarines capable of operating for the next twenty years without further modernisation.
The Södermanland Class Submarine
Technical data
Hull
Single pressure hull
Length over all
60.5 m
Beam
6.1 m
Displacement
1500 tonnes
Weapon armament
Six 53 cm + three 40 cm bow tubes
Weapons
Positive discharge or swim-out
Propulsion
Single-shaft, diesel-electric and Stirling AIP
Submerged endurance
Weeks
Crew
20
6- type 039 (song class)A26 is the project name of the next generation of submarines developed by Kockums. This submarine is intended to be an improved version of the Gotland class submarine, which will be considered obsolete around 2015-2017 according to Per Skantz, development co-ordinator at the Marine headquarters in Stockholm. The submarine will displace 1400 tonnes and have a crew complement of between 17 and 31 men. The 2008-2010 military budget memorandum to the Minister for Defence by the Supreme Commander Håkan Syrén would require the type to cost no more than the current Gotland class (about 1.5 billion SEK).
The Norwegian Navy has shown interests in the project and may buy several submarines in the future. According to Kockums AB orders must be made by the end of 2010
The Type 039 submarine (NATO code name Song class) is a class of diesel-electric submarines of the People's Liberation Army Navy. The class is the first to be fully developed within China and also the first Chinese submarine to use the modern teardrop hull shape.
The People's Republic of China's first submarine design was the locally-produced derivative of the Romeo class submarines provided to China by the Soviet Union. Large numbers of these were built, but their obsolete design, derived from World War II submarine technology, led China to develop a wholly new class on its own, resulting in the Type 039.
Designed for attacking both other submarines and surface ships with torpedoes, the submarine uses a modern teardrop-shape hull for underwater performance. The hull incorporates four rudders and is propelled by a single propeller. For quieter operation, the engine was mounted with shock absorbers and the hull is plated in rubber tiles for sound deadening. Development was not without problems, as a lengthy testing period for the first vessel (320) attests. Problems with noise levels and underwater performance led to revisions in the design and only a single boat was ever built to the original specification.
Improvements led to the specification for the Type 039G, which became the bulk of production, with seven of the type entering service. Elimination of the stepped design for the conning tower is the primary visual cue for identification of the G variant.
As of 2006, this class has three versions: the original Type 039, Type 039G and Type 039A. The most obvious visual difference between the three types is the conning tower. The Type 039's conning tower is stepped, rising aft. In an effort to shrink the submarine's acoustic signature, the Type 039G's conning tower was given a more conventional shape. The Type 039A also has a conning tower of more conventional shape, but the tower lacks the diving planes present on the conning towers of both the Type 039 and the Type 039G.
Primary weapon for the Type 039 is the 533 mm Yu-4 torpedo, a locally produced passive homing 40-knot (74 km/h) torpedo based on the SAET-50 and roughly comparable to the SAET-60. Surface targets may be attacked at up to 15 km. Yu-6 wire-guided torpedoes may also be used for targeting submarines. It is also likely that the Type 039 is capable of carrying the YJ-8 anti-ship missile, a cruise missile which can be launched from the same tube as the boat's torpedoes, and can target surface vessels at up to 80 km. The missile is subsonic and carries a 165 kg warhead. For mining operations, in place of torpedoes, the submarine can carry 24 to 36 naval mines, deliverable through the torpedo tubes.
Although Type 039 has successfully test fired the CY-1 ASW Missile under water like the Yuan class submarine, the status of the missile is in question because nothing is heard about it entering mass production. The CY-1 ASW missile has a maximum range of 18 km (10 nm), and when using A244 or Mark 46 torpedo as a payload.
China offered the 039 submarine for sale to Thailand in 2007. However the Royal Thai Navy lacks the infrastructure to support submarines, and no sales are pending at this time.
