The core differences between the five mainstream life rafts and their most suitable scenarios

Here's an overview: The core differences between these five types of rafts lie in their release method, stability (self-righting), whether they have a canopy, and size/passenger capacity; the suitable scenarios are determined by freeboard height, sea condition severity, vessel type, and voyage distance.

I. Throw Over Board Inflatable Liferaft

•••Key Features:

No boom required; thrown directly into the water by manpower/gravity; automatically inflates upon entry; has a canopy; requires manual righting; lowest price and simplest maintenance.

•••Suitable Scenarios:

✅ Low freeboard cargo ships, bulk carriers, oil tankers (freeboard < 4.5m)

✅ Coastal/inshore navigation areas, short-haul international routes

✅ Older vessels, space-constrained vessels

❌ High freeboard (> 4.5m), passenger ships, high sea state/open ocean

II. Davit-launched Inflatable Life Raft

•••Key Features:

Equipped with a dedicated davit; personnel first board the raft on deck, then the entire raft is lowered to the water; also suitable for emergency deployment; has a canopy; requires manual righting; suitable for high freeboard.

•••Suitable Scenarios:

✅ Passenger ships, cruise ships, ferries (high freeboard, many passengers)

✅ High freeboard cargo ships, offshore platforms, drilling ships (freeboard > 4.5m, mandatory requirement)

✅ Cold waters (avoids hypothermia upon falling into the water)

❌ Very low freeboard, small boats, high-speed vessels

III. Self-righting Inflatable Liferaft

•••Key Features:

An upgraded version of the throw-type liferaft; automatically rights itself after capsizing (<60 seconds); equipped with a canopy; extremely stable; suitable for extreme sea conditions; higher price.

•••Suitable Scenarios:

✅ Ocean-going vessels, container ships, large oil tankers

✅ High sea states, storm-prone areas, winter navigation

✅ Ro-Ro passenger ships, fishing vessels (mandatory for new vessels with 12 or more passengers under new IMO regulations)

❌ No special restrictions, lower cost-effectiveness than ordinary throw-type liferafts

IV. Lesure Yacht Inflatable Liferaft

•••Key Features:

Miniature and lightweight; 4-16 people; simplified structure, affordable price; with a simple canopy; mostly launch-type; suitable for small boats under 24m.

•••Suitable Scenarios:

✅ Private yachts, sailboats, fishing boats, small workboats (length < 24m)

✅ Sheltered navigation areas, nearshore, inland rivers, lakes

✅ Recreational boats, non-solas boats

❌ Large commercial vessels, open sea, high sea states

V. Open/Reversible Inflatable Life Rafts

•••Key Features:

No roof, double-sided usability; circular double buoys; ultra-stable, quick boarding; capacity 6–152 people; designed specifically for high-speed vessels.

•••Suitable Scenarios:

✅ High-speed passenger ships, hovercraft, hydrofoils (Class A high-speed vessels)

✅ Near-shore high-speed routes, sheltered navigation areas

✅ Rapid evacuation, short-distance transport of densely populated areas

❌ Open sea, cold waters, scenarios requiring prolonged rescue (no shelter from wind and rain)