Swedish corvette is engineered for stealth By Edward Lundquist The Swedish corvette Visby is stealthily to the core, right down to the all-composite shaft. From the carbon fiber hull and radar absorbent coating to the enclosed gun mount, flush antennas and telescoping mast, this ship has extremely low signatures. The camouflaged appearance is hard to see, and the engine exhaust being ducted into the water jets reduces the infrared signature (the engine exhaust mixed with the water does create a visible vapor “exhaust”). The machinery sits on vibration isolation mounts, and non-magnetic materials are used throughout. Despite this unique approach...