Spanish Marsopa class Nuclear Attack Submarine:
Previous Spanish submarine classes were diesel electric or Air Independent Propulsion (AIP) systems. Even so, the submarines endurance were still quite limited compared to nuclear powered vessels. Although often forgotten, fusion power becoming viable was just as much of a game changer as the new alloys and composites developed in the Twenty-Thirties. Before then, military nuclear reactors were relatively large and only a few militaries operated nuclear submarines.
The Spanish Navy operated a number of attack submarines which become obsolete with the revolution in new technologies. Instead of rebuilding their existing submarines, the Spanish Navy decided that replacing their old submarines would be more effective in the long run even though the submarine forces were not that old. The rebuilding would have been expensive and likely not has the life span of new built units.
As a result, the Marsopa class was developed. Marsopa is Spanish for porpoise. The first of the class was laid down in Twenty-Forty Eight and completed in Twenty-Fifty Three. Production times decreased in later boats. Later vessels took four and even only three years. Originally only eight were planned but this was later expanded. Sixteen boats were eventually completed. The last boat was completed in Twenty-Seventy Four. As they were completed, the old submarines were decommissioned. They were not even retained as training vessels.
With these sixteen boats, the Spanish navy decided to halt submarine production. There were some attempts in the naval command to get more submarines authorized. Still, the government was reluctant to authorize additional construction. No new submarines were authorized until just before the coming of the Rifts. These boats would have been slightly larger and faster. The first of this new class had just been laid down before the world was destroyed and was never completed.
Being built of high strength composites and alloys, it is quite likely that some of these boats may have survived although none are known to have been recovered. The materials make the boats almost immune to corrosion. If properly sealed, there should be little damage to internal systems as well. Being that they require very small crews, the boats would likely be perfect for mercenary companies. The boat is designed to be operated by a crew of twenty-eight and has the ability to carry eight special forces troops.
Fusion plants give the potential for far more power than a conventional power plant. This is in addition to virtually unlimited underwater range. Top speed underwater is twenty-eight knots and sixteen knots on the surface. The submarine has a special non cavitating propeller for extremely quiet operations. It also has a special sound absorbing materials and the power plant is isolated from the hull. Maximum depth is twelve hundred meters, an improvement over previous Spanish submarine classes. As far as endurance, the fusion plant only needs to be refueled every ten years and the boat carries six months of supplies for the crew. With troops embarked, reduce to four and a half months.
These submarines have six 533 mm heavy torpedo tubes in the bow over the main sonar array. A total of twenty-four torpedoes are usually carried. There is an autoload system for the torpedo tubes. While missiles can be fired from the tubes, usually only missiles are carried for the tubes. This is because the submarine also has twelve vertical cruise missile tubes in the bow behind the main sonar array but outside the main pressure hull. Unlike the torpedo tubes, there are no reloads for the missile systems. Finally, the submarine is armed with a blue green laser mounted on the main sail. The weapon can be used both underwater and on the surface. Useful in defense against both incoming missiles and torpedoes.
Sonar systems are of foreign designs, the towed array a British design by Thales and the main hull array an American system developed by Lockheed Martin. Hull sonar is mounted on the bow with side arrays along the flanks of the submarine. The systems are capable but shorter ranged when compared to those mounted on most American fast attack designs. Part of the reason for that is due to the arrays being comparatively small compared to those on larger vessels
Model Type: S-800 Marsopa class
Class: Attack Submarine
Crew: 28; 5 Officers, 4 Chief Petty Officers, and 19 Enlisted (Has a high degree of automation)
Troop Capacity: 8
Robots, Power Armors, and Vehicles:
M.D.C. by Location:
|Retractable Laser Cannon Turret (1, Main Sail):||125|
|21 Inch (533 mm) Torpedo Tubes (6, Bow of submarine):||125 each|
|Vertical Cruise Missile Launchers (12, Bow of Submarine):||150 each|
| Sail Planes (2, Main Sail):||150 each|
| Low Cavitation Propeller (1):||300|
| Main Body:||1,600|
 Destroying the submarines bow planes will reduce the submarine's ability to change depths but will not eliminate it. It also makes it difficult for the submarine's crew to control the submarine giving a penalty of -25% to all piloting rolls.
 Destroying the submarines Pump Jet Propulsor causes serious problems. The submarine will no longer be able to use forward momentum and the bow planes to keep the submarine level. It is recommended that ballast takes are immediately blown so submarine comes to surface.
 Depleting the M.D.C. of the main body destroys the submarine's structural integrity, causing it to sink. If the submarine is underwater, the entire crew will die unless protected by environmental armors that can withstand the pressure that the submarine is under. If on the surface, there are enough flotation devices and inflatable life rafts to accommodate everyone aboard.
Surface: 18.41 mph (16 knots/ 29.63 kph)
Underwater: 32.22 mph (28 knots /51.86 kph)
Maximum Depth: 3,937.0 feet (1,200 meters)
Range: Effectively Unlimited due to fusion engines (needs to refuel every 10 years and requires maintenance as well). Boat carries six (6) months of supplies on board.
Length: 237.20 feet (72.2 meters)
Beam: 38.71 feet (11.8 meters)
Draft: 20.01 feet (6.1 meters)
Displacement: 2,500 tons surfaced / 2,880 tons submerged
Cargo: 6 tons (5.44 metric tons) of nonessential equipment and supplies. Each enlisted crew member has a small locker for personal items and uniforms. Boat's officers have more space for personal items. Most of the boat's spaces are taken up by extra ammo, armor, weapons, and engines.
Power System: Nuclear; average energy life of 10 years. Normally refuels every 5 years
Market Cost: Not for sale; many nations and organizations would pay hundreds of millions of credits for a new and undamaged Marsopa class Submarine.
- One (1) Retractable Blue/Green Laser Cannon Turret: Developed
in Germany, this cannon was mounted on the forward section of the main
sail and fully retractable so that it did not disrupt water flow at high
speeds and was useful both underwater and on the surface. The weapon system
was used mainly as close defense against aircraft when on the surface.
The laser cannon was useful both on the surface and underwater at low speeds
(5 knots or less), and could also be used to engage incoming torpedoes.
The mount was controlled by a separate gunner and could rotate 360 degrees
and had a 90 degree arc of fire.
Maximum Effective Range: In Atmosphere: 2 miles (3.2 km) Under Water: 1 mile (1.6 km)
Mega Damage: Each cannon inflicts 2D4x10 M.D.C.
Rate of Fire: Four (4) Times per melee.
Payload: Effectively Unlimited.
- Six (6) 21 inch (533 mm) Heavy Torpedo Tubes: On the bow
of the submarine, above the hull sonar, are six torpedo tubes. Tubes are
21 inches (533 mm) wide and torpedoes can be used against both surface
ships and submarines. Torpedo launchers have a special automated reloading
system to reduce noise. For warheads, heavy torpedoes should be treated
as having long range missile warheads. Along with standard torpedoes, the
launcher can also fire missiles (long or cruise) in special canisters and
rocket boosted ASW torpedoes. Missiles are rarely carried. Submarine carries
twenty-four reloads for torpedoes (in addition to four torpedoes in the
tubes) and can carry up to forty-eight mines in place of torpedoes.
Maximum Effective Range: 40 miles (64 km) for standard heavy torpedoes (See revised Rifts torpedoes for details.)
Mega Damage: By Heavy torpedo warhead type (See revised Rifts torpedoes for details), can fire missiles (Long Range or Cruise) in special canisters as well (See revised bomb and missile tables for details.)
Rate of Fire: Can fire torpedoes one at a time or in volleys of two (2), three (3), four (4), or six (6) torpedoes. Reloading takes one (1) full melee
Payload: Six (6) Total [Has twenty-four (24) torpedoes for reloads.]
- Twelve (12) Vertical Launch Cruise Missile Launchers: In
the front of the submarine but behind the main sonar array, the submarine
has vertical launch system for launching cruise missiles. Launchers are
outside of the pressure hull. Missiles are launched in special canisters
that enable the missiles to be used in depths down to 600 feet (182 meters).
Most missiles normally carried are fusion (Also smart missiles). The launchers
can fire all standard cruise range missiles including the hypersonic Fasthawk
in both its sea skimming anti ship and semi ballistic land attack guises.
Maximum Effective Range: As per cruise missile type (See revised bomb and missile tables for details.)
Mega Damage: As per cruise missile type (See revised bomb and missile tables for details.)
Rate of fire: One at a time or in volleys of two (2), four (4), eight (8), or twelve (12) and can be fired at multiple target at the same time.
Payload: Twelve (12) cruise missiles total. Submarine carries no reloads.
- Two (2) Advanced Decoys: The submarine carries two advanced
decoy drones. These were small automated vehicles that created a false
sonar image designed to mimic the submarines sonar signature. It has a
small propulsion system that can simulate movement (had a top speed of
10 knots) and maneuvers. If decoys are not destroyed, they can be recovered
and repaired. Rifts Earth decoy systems are assumed to not operate against
Phase World weapons due to technological difference.
Effects: The decoy has an 80% chance of fooling ordinary non military sonars and non smart guided torpedoes, the decoy has a 50% chance of fooling military level sonars (like those of the Coalition), and the decoy has a 25% chance of fooling advanced military sonars (Like those of the New Navy and Triax) and smart torpedoes.
Decoys have a duration of 30 minutes (120 melee rounds)
Range: Not Applicable
Rate of Fire: Ship can launch one drone per melee.
Payload: Two (2) Decoys
- Noisemakers: The submarine carries noisemakers to decoy torpedoes.
These noisemakers are similar to those used by Coalition submarines. The
noisemakers are launched from the middle of the submarine.
Effect: 50% of decoying normal torpedoes and 20% of decoying smart torpedoes.
Rate of Fire: 2 at a time (Can be reloaded in one melee)
Payload: 20 Noisemakers.
The submarine has all systems standard on a robot vehicle plus the following special features:
- Lockheed Martin / SAES SUBICS-4 Advanced Hull Sonar: Range of 50 miles (43.4 nautical miles / 80.5 km). This hull sonar system has both a passive and active system built in. Sonar system can track up to 24 targets at one time and has a +10% to read sensor and weapon system skill rolls. Sonar also has built in communication system and sound pulse system to detect obstacles, objects, vessels and fish (schools and large animals), as well as measure distances and depth.
- SAES / Thales FRTAS-2X Advanced Towed Array Sonar: The system is basically a long and very sensitive sonar system carried behind the submarine on a long cable. Range of 160 miles (138.9 nautical miles / 257.5 km). This is an incredibly sensitive and almost as powerful as the special purpose United States pre-rifts SURTASS system. This towed array sonar system has both a passive and active system built in. Sonar system can track up to 36 targets at one time.
- ESM: This system is mounted in mounted in the superstructure and is extended in a similar manner to a periscope. The antenna is very hard to detect both visually and by radar. Can detect another radar system at 125% of the range of the transmitting radar.
- Quieted propulsion and Anechoic Coating: The ship is designed with a very quiet cavitation reducing electrically powered propeller design, the submarine's reactors make very little noise, and the boat is coated by a sonar defeating rubber coating. The submarine is -40% to detect when traveling at less that 20 knots and is at -20% to detect when traveling at greater than that speed.
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Writeup by Kitsune (E-Mail Kitsune).
Copyright © 2012, Kitsune. All rights reserved.