Our 24" Diameter Lifebuoy Ring is lighter and easier to deploy and is ideally suited for Rivers, Lakes and Canals or Shelving beaches where the buoy will need to be thrown. This lifebuoy is used by Local and River authorities and all kinds of personal and commercial uses. - Available with or without SOLAS reflective tape - Reflective tape aids night time recovery External dia 56cm - Internal dia 35cm - Thickness 9cm - Weight 1.2kg (Approx dims) Buoyancy Rating: 80N 30" Diameter SOLAS / Ships Wheel approved Lifebuoy these liferings are more suited where there is a straight drop between the rescuer and casualy such as Docks, Piers, Harbours, and Boats or where there may be multiple casualties and additional buoyancy is required. - External dia 74.5cm - Internal dia 44.5cm - Thickness 11.5cm - Weight 2.7kg (Approx dims) Buoyancy Rating: 181N Our lifebuoys are foam filled to prevent water entering. To enable the retrieval of the lifebuoy we recommend a throwline. either a loose 30m floating line or an encapsulated line that fits neatly inside the lifebuoy (see related products below). For genuine lifebuoys ring and other marine safety equipments, please contact: McDURCH CONTRACTING NIG. LTD.