 The suit allows survivors to escape a disabled submarine at depths down to , with an ascent speed of 2–3 meters/second, at a rate of eight or more sailors per hour.The latest generation RFD Beaufort SEIE MK11 enables free ascent from a stricken submarine and provides extensive protection for the submariner on reaching the surface until rescued.A typical assembly comprises a submarine escape and immersion suit, an inner thermal liner, and a gas-inflated single-seat life raft, all contained in a protective stowage compartment.