The National Sea Rescue Institute (NSRI) is a voluntary non-profit organisation in South Africa tasked with saving lives through drowning prevention.

Captain Bob Deacon and Ray Lant were the first volunteers to respond to this call and in 1967 the South African Inshore Rescue Service (SAISRS) was started, with a 4.7m inflatable boat donated by the Society of Master Mariners.

The vessel is longitudinally subdivided into forepeak, forward accommodation for survivors, tank space with heads, engine room and steering flat.

The superstructure is on the main deck and comprises a watertight wheelhouse, which provides a high centre of buoyancy for self-righting, and has a raised exterior steering position on the port side.

A track with sliding cars runs around the wheelhouse just below the handrail, providing secure but mobile harness clip-off points for crew working on or traversing the side decks.