Hetman-Class Missile Ship
| File:D-Class.jpg A Hetman class ship, Valdimirov, underway off the coast of Jutland
| |
| Class overview | |
|---|---|
| Name: | Hamina |
| Builders: |
list error: <br /> list (help) |
| Operators: |
 Dniegua |
| Cost: | $100,000,000 URD |
| In service: | 2007- |
| Planned: | On demand |
| Building: | 4 |
| Completed: | 18 |
| Active: | 16 |
| Lost: | 1 |
| General characteristics | |
| Type: | Fast attack craft |
| Displacement: | 375 tons |
| Length: | 51 meters |
| Beam: | 8.5 meters |
| Draught: | 1.7 meters |
| Propulsion: |
list error: <br /> list (help) 2 × Pennington Marine 16V TB93 diesels; 7450 hp 2 × Aquarius Marine AD-FT/90 waterjets |
| Speed: | 38 knots |
| Range: | 865 nautical miles at 16 knots |
| Endurance: | 20 days |
| Complement: | 32 |
| Sensors and processing systems: |
3D/16-ES multimode acquisition 3D radar 2000 Combat Management Systems Ek-220 Sonar suite TSA-220 towed array sonar |
| Electronic warfare & decoys: |
list error: <br /> list (help)
|
| Armament: |
list error: <br /> list (help) 1 × 57mm gun in low RCS mount 2 × 14.5x114 guns 8 × Surface-to-air missile (SAM) 4 × Orca Sea Strike missiles Surface-to-surface missiles (w/ 24 in reload) 1 × rail for Depth Charges or Mk. 18 Mine |
The Hetman-Class Missile Ships are a family of fast attack missile Corvettes from Dniegua. Integrating highly stealth profiles and extremely advanced electronics, the ship is popularly called a floating computer.
Design and History
The vessels were designed and constructed in the early 2000s, and are among the most advanced surface combat ships from Dniegua. The first vessel was ordered in December 2004.
The vessel's hull is constructed of aluminum and the superstructures are constructed of re-enforced carbon fiber composite. The vessels have a very low displacement and are very maneuverable. They are equipped with water jets instead of propellers, which allow them to operate in very shallow waters and accelerate, slow down and turn in unconventional ways.
The Hetman-Class are very potent vessels, boasting surveillance and firepower capacities which are usually found in ships twice the size.
The electronic warfare systems onboard are among the most advanced in the world, rivaling many of ships much larger than the Hetman-Class.
The ships are expected to be upgraded within the next 5 years.
Stealth Technologies
The Hetman-Class has been designed and constructed as stealth ships with minimal magnetic, heat and radar signatures.
The shape of the vessel has been designed to reduce radar signature. Metal parts have been covered with radar absorbent material, and the composite parts have radar absorbent material embedded in the structure. Radar transparent materials (kevlar, balsa) have been used where applicable.
Unlike glass fiber, carbon fiber blocks radio waves. This protects ship's electronics against electromagnetic pulse. In addition, it stops any radio frequency signals generated by ships electronic devices escaping outside. Except for the bridge, the vessel has no windows that would allow the signals to escape.
The vessel contains hardly any steel parts, thus generating very low magnetic field. The remaining magnetic field is actively canceled with electromagnets.
Exhaust gases can be directed underwater to minimize thermal signature, or up in the air to minimize sound in submarines direction. 50 nozzles around the decks and upper structures can be used to spray seawater on the vessel to cool it. In addition, the nozzles can be used to clean the ship after chemical attack or radioactive fall-out.