The 236 ST (Diving Rescue Support Vessel) is capable of performing Submarine Rescue Operations up to a depth of 650msw thanks to the moon pool launched Drass Submarine Rescue Vehicle (SRV). The vessel is equipped with a compact 9-man in-built Saturation Diving System rated to 300msw. The vessel hosts an in-built Drass Submarine Ventilation System rated for 650msw and a Working ROV. This vessel design is suitable to operate in extreme sea conditions.