iMAR is a wellknown provider of inertial navigation and stabilization systems. SWATH vessels are of special interest due to its damanding requirements and the required customer support in design and integration.

See page 21 of the following journal:

HANSA SHIPS 2009 (pdf, 4.5 Mbyte)

General information about iSSMC Ship Stabilization & Motion Control:

Datasheet iSSMC
Product information of iMAR's Naval Division 
Press release "Delivery of "Helgoland" to the German Customs"
Video of iSSMC: gyro controlled flaps