The Classification Of Life Boat
Open type lifeboat
Features: There is no fixed rigid canopy device above the edge of the boat.
Advantages: The upper floor is spacious, easy to board and move in the boat; easy to operate; good sight.
Disadvantages: When the weather is hot, people will be exposed to the sun, prone to heatstroke and sunburn; in the cold winter, if there is no warm protection items, personnel will be hurt by the cold; when encountering winds above 4-5, personnel and lifeboats will Invaded by the waves; in addition, if it is overturned by wind and waves, it is difficult to correct the strength of the personnel in the lifeboat.
Scope of application: Only for coastal small vessels and inland waters.
Partially enclosed type lifeboat
Features: The bow and the stern each have a fixed rigid top cover with no less than 20% of the length of the boat, and a foldable roof in the middle.
Advantages: The foldable canopy, together with the rigid top cover, forms a weatherproof cover that protects the boat from wind and rain and sun exposure; the bow and tail exits and the foldable entrances and exits on both sides. When closed, it can prevent seawater and cold air from invading. It can also be used for ventilation when it is opened. The entrance and exit is larger than the enclosed lifeboat. When boarding under normal conditions, it is convenient for more people to board and exit from one or both sides.
Disadvantages: If you turn over, the escape of the boat personnel is not as convenient as the open lifeboat.
Scope of application: mainly used for cruise ships, ferries and passenger ships.
Fully enclosed lifeboat
Features: The upper part of the lifeboat is provided with a closed fixed rigid canopy.
Advantages: The personnel are protected from wind and rain, seawater intrusion and sun exposure, and have self-righting function; the sides of the fully enclosed lifeboat and the first and the tail have internal and external opening and closing passage covers to facilitate the crew to enter and exit the lifeboat. The access cover is closed to ensure that the lifeboat has good watertightness and thermal insulation; the top of the boat is provided with a sprinkler cooling device; the top window on the fixed canopy allows sufficient sunlight to be injected into the lifeboat with the hatch closed.
Disadvantages: Small entrances and exits, inconvenient personnel boarding; the observation in the boat is not as wide as the open boat.
Scope of application: The International Maritime Organization incorporates fully enclosed lifeboats into the main life-saving equipment that must be provided for international passenger ships and cargo ships.