救生艇和救助艇吊要求
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Lloyd’s Register Rulefinder2008-Version9.10
Resolution MSC.81(70) - Revised Recommendation on Testing of
Life-Saving Appliances - (adopted on 11 December 1998) on 13
May 2005) Part 2 - Production and Installation Tests
6 Launching and Stowage Arrangements
Loaded lowering test (brake test only)
6.1.5. The survival craft or rescue boat loaded with its normal equipment or an
equivalent mass and a distributed mass equal to that of the number of persons,
each weighing 75 kg, it is permitted to accommodate + 10% of the working
load, should be released by the operation of the launching controls on deck.
When the craft has reached its maximum lowering speed, the brake should be
abruptly applied to demonstrate that the attachments of the davits and winches
to the ship’s structure are satisfactory. The maximum lowering speed
established by the Administration should not be exceeded.
Recovery test
6.1.8. It should be demonstrated that the davit-launched lifeboat or rescue boat
can be recovered to its stowage position by means of operating the hand gear
and can be safely and properly secured.
6.1.9. For free-fall lifeboats it should be demonstrated that the survival craft
can be recovered to its stowage position and can be safely and properly
secured.
6.1.10. Where davits are recovered by power, it should be demonstrated that
the power is automatically cut off before the davit arms come against the
stops.
6.1.11. In the case of rescue boat launching appliances, it should be
demonstrated that the fully equipped rescue boat when loaded with a mass
equal to that of the number of persons it is approved to carry can be recovered
by means of a winch at a rate of no less than 0.3 m/s.
6.1.12. It should be demonstrated that the rescue boat can be recovered by
means of the winch referred to in 6.1.11 using a hand gear.
Provisional Rules for the Application of Sandwich Panel Construction to Ship
Structure, April 2006
Launch and Recovery Appliances for Survival Craft and Rescue Boats
Section 6 Davits
Table 3.6.6 Prototype: dynamic test factors
Boat position
From To Lifeboat Rescue boat
Stowed Embarkation 1,1 × P1 1,1 × P1
Embarkation Sea level 1,1 × P2 1,1 × P1
Sea level Embarkation 1,1 × P1 1,1 × P2
Embarkation Stowed 1,1 × P1 1,1 × P1
where
P1 = Weight of the lifeboat or rescue boat (as appropriate) with full equipment
and weight of operating crew.
P2 = Weight of the lifeboat or rescue boat with full equipment and weight of
crew and weight of passengers (i.e. SWL).
6.12.3. Production testing of survival craft (excluding free fall) and rescue boat
davits and winches are to comply with the following requirements:
(a). A `static’ load test of 2,2 times SWL is to be held by the davit in its fully
outboard position at 0° list (2,5 times SWL for use offshore).
(b). A `static’ load test of 1,5 times SWL is to be held on the winch brakes.