Inflatable Liferaft

Inflatable life raft is one of the important tools in survival at sea, floaters are so common type and can lift type two kinds, one stroke raft raft process more quickly, quickly, more widely in the ship equipped.

Inflatable life raft of basic requirements:
1, the construction should be able to stand in all cases exposed to float up to 30 days.
2, should be able to in the 18 meters high stroke without affecting the water use.
3, floating raft should be able to endure from 4.5 meters high jump repeatedly without damage.
4, rated by member of the raft for at least 6 people, also can't more than 25 people.
5, the raft including fittings and apparels as stipulated in the amendment in 83, the total weight should be less than 185 kg.(domestic regulations not more than 180 kg)
6, the raft under full occupant screen after a sea anchor, can be in calm water boat towing, its speed is section 3.
7, raft down half of fetal buoyancy on rated crew should be able to support life raft all floating in the water.
8, raft should be able to - 30 ℃ ~ 65 ℃ temperature range ﹢ use.
9, raft should use nonpoisonous gas filling, carbon dioxide and nitrogen mixture (compressed) when environment temperature is between 18 ℃ and 20 ℃ in 1 minutes, when the environment temperature 30 ℃ to - fully within 3 minutes.
10, the raft should establish an effective first line, the length shall be not less than from place to the lightest load navigation line 2 times or 15 meters, take its elders (this is the provisions of the 1983 amendment).
Should be installed by the regulation hydrostatic pressure release inflatable life raft, should be connected to the raft automatic float to weak snap ring (easy broken rope) when one of them.
11, inflatable life raft "roof for orange.Raft suitable spacing around the top and bottom of the raft should be filled with 5 * 30 cm light reflective tape, and is equipped with at least a blister.
12, raft storage barrel should be watertight, inflatable can automatically bulge, storage barrel water at ordinary times should be able to float nature.
13, inflatable life raft should be marked on the raft body: factory name or trademark;Factory number, manufacturing date, name of the approval authority, a recent overhaul repair station name and location, on the storage barrel along must mark year to meet the requirements of SOLAS, cable length, allowed in the height above the waterline and landing requirements, etc.

The life raft of deposit:
1, the liferaft should be on life-saving raft frame on deck.
2, large raft flat on top of ship deck (such as standard compass deck)

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Marine Main Propulsion System

A:Propeller

• High speed propeller,nozzle propeller,blg area ratio,larger-sized propeller
• Hydraulic connection key connection Material:Cu1,Cu2,Cu3,Cu4

B:Stern tube

• One-piece welding type,split type
• Made of casting steel,forging steel,low carbon steel

C:Bearing

• Oil lub(white metal)
• Water lub(rubber or high p

D:Hydraulic coupling

• Flange type,sleeve type
• With middle sleeve type,without middle sleeve type,without middle sleeve type

E:Middle bearing

• Rolling bearing,sliding bearing
• Sliding oil wedge,multi-oil wedges
• Multi-oil wedge inclues:with upper bush type without upper bush type

F:Hydraulic nut

• Easy to mount and lock the peopeller

G:Nozzle

• Fixed type,movable type,turnable type
• Made of stainless steel and steel H Stern thbe seal Fixed type,movable type,turnable type

H:Stern thbe seal

• Fixed type,movable type,turnable type
• Made of stainless steel and steel

I:Tail shaft

• Key connection, hydraulic connection,flange connection
• Carbon steel,alloy steel, stainless steel

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How to survive at sea

Although the sea environment is very bad, but human survival at sea has accumulated rich experience, a lot of amazing miracle survival.Float some lives were rescued, after a long time, such as the United States have three Pacific fleet pilots, floating on a rubber boat rescued 34 days;There are three people in the south Atlantic on floating 83 days.
Experts pointed out that sea survival has the following elements:
Lifesaving Equipment

If there is no survival equipment survival at sea, then in the vast sea saved alive hope obviously very weak.According to statistics, about 80% of the ships sank within 15 minutes after the crash, only about a third of the life-saving equipment can timely before sinking down water, so that many people drowning death, and climbed up the life-saving equipment is 94%.Thus, once climb the life-saving equipment, will greatly increase the opportunities.
Save your knowledge
Mastering the knowledge about sea lives were some self-help is very important.The use of these knowledge including the life-saving equipment methods and basic requirements, should take emergency measures, and report the crash site to abandon ship after the action, distress and signal transmission.
Maintain A Normal Diet
For the survival, fresh water is more important than food.Stored in the human body nutrition, as long as a day gives proper water can still maintain a life for a long period of time.But if there is no fresh water, it is hard to maintain for a long time.Rated crew to maintain the food inside the lifeboat for 7 days, within the raft of food for three days.Can temporarily not in abandon ship within 24 hours after eating, after quota to eat every day, to save as much as possible.If floating on the sea for a long time, when food shortages, can catch fish, birds, and collecting seaweed added.But without enough fresh water supplies, should avoid eating these things, otherwise it will consume large amounts of water in the body.
The Will To Live
Experts think, maritime distress of the cause of premature death is not the hunger and thirst, is mainly caused by fear.Thus, survival is an important factor of survival at sea is must have a survival does not fear the difficulty of strong will and firm faith.Therefore, must first overcome the despair and fear, second can withstand the test of hunger, cold, thirst and dizzy billow.Maritime distress, if oneself in a crisis, MangErBuLuan, and well prepared in advance, so can increase the rescue of the hope.
When working on the boats life should be vigilant in the thoughts, ready to consider well in advance in the event of an emergency should be how to act.Understand the spare, jackets, boat and life raft storage locations for each channel, the entrance of this vessel, transportation route and the recent exits to the deck, so that in emergency situations can quickly leave the dangerous place.Sea lives were, if not survival floating tool, has the possibility of a drowning.Especially in the big waves, especially under the condition of the bad weather.So sea lives were the first thing to solve is floating and prevent drowning.To prevent drowning main methods are:

1:Using the floating tool, such as life jackets, life boat and life saving valve, etc.
2:Learn to swim and fg technology.

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Survival and Life Raft

Sailing because of the erratic weather, environment is complex, there are dangers of perils of the sea, sea rescue and survival is the important problem of safety of life at sea is a maritime personnel must master every navigation skills.
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.

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Marine life-saving equipment requirements

In order to ensure the safety of crew and passenger ships must be configured according to the requirement of the life-saving equipment specification of life-saving equipment, such as the boat and life raft, rescue boat, buoyant apparatus, life buoy, life jackets, line throwing and life-saving pyrotechnic signal, etc.So that once killed an abandon ship all the crew of the ship were able to use the life-saving equipment wait for the rescue.

The basic requirement of survival equipment:
1, ship lifesaving equipment in front of the ship's departure and all the voyage should be immediately available.
2, boat and life raft and survival float should be able to land in shortest time.In normal climate condition, the passenger on the boat, raft, or float can land in 30 minutes all the surface of the water, in addition to other than the passenger ship is not more than 10 minutes.
3, all life saving equipment location, should be conducive to the rapid operation, as well as the personnel on board quickly assembled and embarkation.
4, shall ensure that all personnel in the channel to embarkation location location, import and export and survival equipment, there is emergency lighting.
5, lifesaving equipment in the period of validity should be preservative, corrosion resistance, is not due to sunlight, sea water, crude oil or descent of the mold and affect the normal use.Survival equipment shall be painted orange.

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