Survival must have effective life-saving equipment, certain survival knowledge and three basic conditions, the strong will to live and survival equipment, survival knowledge and survive, also known as the three elements of survival.
Life raft is currently one of the most important survival equipment on ships, deposit which has small volume, light weight, delivery fast, good stability, wave, cold resistance and a series of other rescue facilities incomparable advantages, therefore used widely used for various types of ships.
Life Raft from manufacturing materials have spirit expanding Life raft and the Life raft rigidity, will tell from the on the way to have a stroke and hanger landing (hanging) life raft. The most used is what we see now stroke type inflatable life raft. Its structure is mainly composed of the Life raft body, peng, peng account and the cylinder of five parts and accessories, the Life raft body is the body of the inflatable raft. Is composed of two independent floating tire, no more child inside a safe air compensating valve, automatically deflated when the pressure is too great, and the screams, below the work pressure, also can use aerator.
Inflatable life raft shall comply with the following technical requirements:
1. In 66 degrees ~ 30 perturbation type temperature range of use, and in all sea condition exposed 30 days roaming.
2. The raft body is composed of several even bulkhead, half of the bulkhead should be able to support crew rated above the water.
3. There is no air can hold up the roof, and rainwater harvesting device and seawater battery power the lights.
4. Since the 18 meters into the surface, raft and fittings are not damaged.
5. When the ship sank the depth of the water is not more than four meters, hydrostatic pressure release raft can free from sinking and floating at sea, for difficult embarkation.
6. When in the overturned position, in the wind and waves and one centralizer can calm water.Inflatable raft folded on the container at ordinary times, will be thrown into the water container in emergency, pull the gas cylinder valves, in the process of continuously swell inflatable molding, there is a be battered by a storm, easy to swing to raft upside down, if can not use both sides of the raft rigidity, requires the centralizer, centralizer is:
1. Put on life jackets, floating raft to have one side of the cylinder, hold the raft to the cylinder disadvantage.
2. Climb to the top of the bottom of the valve, seize the centralizer, standing on the cylinder, in the face of the winds and waves.
3. Ready, seize the moment, the body squat suddenly back, after the use of body gravity will pull on a raft.
4. When the raft to the vertical, estimated according to its inertia, can the centralizer, at this time should be both feet against the cylinder, on his back off the raft to avoid the button at the bottom of the raft.
5. Don't be nervous as the button at the bottom of the raft, the hands hold the bottom of the raft, opened the life raft. The body can emerge
6.15 or more inflatable raft, such as a centralizer have difficulty, also can climb up the raft bottom at the same time, two people to the centralizer.
Proficient in operating life raft centralizer is very important for each seafarer, it is an important part of sea survival skills.