All-weather lifeboat
Severn class
Royal National Lifeboat Institution · United Kingdom & Ireland
The largest RNLI lifeboat, kept afloat; carries a Y-class inflatable.
Specifications
Hull & dimensions
- Manufacturer / builder
- —
- Hull type
- —
- Hull material
- Fibre-reinforced composite
- Watertight compartments
- —
- Length overall
- 17.3 m (56.8 ft)
- Length at waterline
- —
- Beam
- 5.9 m (19.4 ft)
- Draught
- 1.8 m (5.9 ft)
- Freeboard at bow
- —
- Freeboard at stern
- —
- Displacement
- 42 t (46.3 US tons)
- Gross tonnage
- —
- Net tonnage
- —
- Min vertical clearance
- —
- Height to highest unfixed point
- —
- Height to highest fixed point
- —
- Number built
- 46
- Year introduced
- 1996
- Year retired
- —
Machinery & propulsion
- Propulsion type
- Twin propellers
- Engines
- 2 x Caterpillar C18
- Engine manufacturer
- —
- Total engine power
- —
- Fuel type
- —
- Total fuel capacity
- —
- Fresh water capacity
- —
- Launch method
- Afloat
Members-only
Operating limits (seas, surf, wind), towing and stability data, and detailed engineering specifications are available to Members.
Performance & capabilities
- Maximum speed
- 25 kn (46.3 km/h · 28.8 mph)
- Range
- 250 nm (463 km · 288 mi)
- Endurance
- —
- Crew complement
- 6
- People capacity
- —
- Self-righting
- Yes
- Self-bailing
- —
- Ice operations capable
- —
- Max ice-breaking thickness
- —
- Medical facilities onboard
- Yes
Members-only
Operating limits (seas, surf, wind), towing and stability data, and detailed engineering specifications are available to Members.
Operational envelope & limits
Members-only
Operating limits (seas, surf, wind), towing and stability data, and detailed engineering specifications are available to Members.
Source citations
| # | Source | Type | Supports | Accessed |
|---|---|---|---|---|
| [1] | RNLI https://rnli.org/what-we-do/lifeboats-and-stations/our-lifeboat-fleet/severn-class-lifeboatImported at initial compilation; not yet checked against source. | official | General | Not yet checked |