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CHAPTER 1
9107
May/12
SERVICE MANUAL
Page 111
Feb/11
CHAPTER 1
ISO 9650
283
SERVICE MANUAL
7.8 Attachment of stowed liferafts
7.8.1 Make sure the liferaft can be released easily when a manual launch
is necessary or for f
l
oat-free operation (refer to Step 10).
7.8.2 Make sure the mechanism which holds the liferaft on the rack can be
removed easily in an emergency:
A slip-link (Senhouse slip) or other release mechanism which can be
operated by a single swift action should be provided.
7.9 Float-free attachment (hydrostatic release)
7.9.1 A f
l
oat-free launch is operated by a mechanism which inf ates and
releases the liferaft automatically from a ship that is sinking.
NOTE:
The hydrostatic release must be installed as per
manufacturer’s instructions.
NOTE:
If the hydrostatic release is a type which requires
servicing, it must be serviced by an approved servicing
station. The service station must record the date of
servicing on the data plate attached to the unit.
NOTE:
If the hydrostatic release is a type that must be
discarded (lifed item) it must be identif
i
ed with the date
of expiry and must be replaced by that date. They
usually have an operational life which does not include
a servicing period.
7.9.2 A weak-link must be installed in the hydrostatic system to make sure
a liferaft is not pulled under the water by a sinking ship.
7.9.3 The weak-link in the system must have a breaking strength of 1.8 -
2.6 kN (404.66-584.5 lbf) to pull the painter from the liferaft container
and activate its inf
l
ation system.
7.9.4 If it is necessary to launch the liferaft manually, make sure the painter
line is attached to a strong point on the ship. The strong point must
be suff
i
cient to support the pull of the painter line to operate the
inf
l
ation system.
7.9.5 A slip link, lashed to the holding down straps, should be provided
between the hydrostatic release and the straps. This will enable
manual quick release for the liferaft.
