and launching appliance manuals may be effective if adequately co-ordinated and using the same
style of presentation per these guidelines.
3 Contents of a manual for a lifeboat system 3.1 Items to be included
An operation and maintenance manual for a lifeboat system should include, as a minimum, the following items:
.1 overview and specification of the lifeboat system;
.2 explanation of the structure and working principle of the major parts of the lifeboat system including release gear systems; MSC.1/Circ.1205 ANNEX Page 2
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.3 operation of the lifeboat system; and
.4 routine inspection and maintenance of the lifeboat system. 3.2 Organization, description and layout of manual 3.2.1 Outline
It is recommended that a manual for a lifeboat system be developed with the following major divisions:
1 General description of the whole lifeboat system. 2 Method of checking proper closure of release hooks. 3 Launching operation. 4 Recovery operation.
5 On-load/off-load release gear. 6 Inspection and maintenance.
3.2.2 Explanation of major components and their function
The structure and working principle of the lifeboat’s major components, in particular the on-load/offload
release gear, should be explained using figures and preferably three-dimensional perspectives.
In addition, the operation of the release gear should be described sequentially, using short phrases
written in the active voice.
3.2.3 Operation of lifeboat system including release gear systems
The operation of the lifeboat system should be described using the following elements:
.1 flow of the operation should be explained;
.2 detail of operation should be explained with figures. Operation and relevant movement of the parts of the release gear should be described with
illustrations/photos, preferably using annotations and arrows to show direction of movement; and
.3 hazards, precautions and notes should be identified with symbols specific to the level
of risk. As an example of the various levels of risk and the appropriate associated symbols, the following are recommended:
.1 For the highest level of risk, such as in the explanation of “on-load release operation”, the following symbol (red background) should be used with a warning statement similar to the following: MSC.1/Circ.1205 ANNEX Page 3
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Warning
This operation releases the lifeboat and may result in the lifeboat dropping and causing death or serious injury if released too soon.
Note: International standard symbols (ISO 3864-1 and ISO 7010) are recommended where
appropriate, but since marine use is excluded from the scope of these standards, and they fail to indicate different levels of risk, the “graduated” symbols are recommended.
.2 For the second highest level of risk, such as in the explanation of “davit arm stop release operation”, the following symbol (yellow background) should be used with a caution statement similar to the following: Caution
Incorrect or incomplete resetting may cause the lifeboat to drop resulting in death or serious injury.
.3 For less critical mandatory instructions the following symbol (blue background) should be used with appropriate instruction: Mandatory
Place the manual gripe out of the way to prevent tangling round the lifeboat. . . .
.4 Important notes may be emphasized with symbol and style of instructions similar to the following: Note
In case the hook is not released by the above operations, confirm condition of each hook and whether the boat is waterborne or not.
Even though the hooks cannot be released by the above mentioned offload release operation, the on-load release procedure, described in the following pages, is possible.
.5 Prohibited actions should use the following symbol (coloured red) and style of instruction: Never
Never enter lifeboat without ensuring complete closure of release
hooks. Incomplete resetting of the release hooks can cause the lifeboat
to drop and may result in the death of occupants. MSC.1/Circ.1205 ANNEX Page 4
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3.2.4 Inspection and maintenance
The items for weekly and monthly inspection/maintenance and other inspection/maintenance should each be explained separately.
4 Improvement of user-friendliness of a manual 4.1 Use of figures/photographs
Figures, preferably coloured, or photographs should be used as far as practicable to make manuals easy to understand.
4.2 Use of standard wording
The following standard wording should be used to explain lifeboat systems where provided, and for
each of the applicable items illustrations should be provided to show the items and their location in
the lifeboat or on the ship. The use of alternative terms for variety should be avoided, except to
further define or clarify a term so that the reader never has to guess what item or system is being discussed.
.1 Davit/winch:
.1 Auto releasing gripe .2 Davit arm .3 Davit arm stop
.4 Davit remote control wire handle .5 Frame
.6 Maintenance (hanging off) pennant attachment points, if provided .7 Manual gripe, if provided .8 Remote control wire
.9 Winch manual brake safety pin .10 Winch hand crank handle
.11 Winch centrifugal or lowering brake .12 Winch hand brake or stop brake lever .2 Freefall:
.1 Roller or sliding pad .2 Sea lashing rope
.3 Emergency release device .3 Release gear:
.1 Hook control cable
.2 Hook retainer (lock piece)
.3 Hydrostatic interlock
.4 Hydrostatic interlock lever, if provided
.5 Interlock (“mechanical protection” of on-load release)
.6 Maintenance (hanging off) pennant attachment points, if provided .7 On-load release .8 Release handle MSC.1/Circ.1205 ANNEX Page 5
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.9 Release handle “closed (locked)” and “open” positions .10 Release handle “safety pin”
.11 Release hook (hook unit) (fore and aft hooks) .12 Reset lever, if provided .13 Safety latch (keeper) .4 Suspension:
.1 Foul weather recovery strops .2 Suspension block
.3 Suspension link (lifting ring) .5 “Officer in charge” of lifeboat
5 Example of an operation and maintenance manual for a lifeboat system An example of an operation and maintenance manual for a fire-protected lifeboat system is attached
in the following pages just for reference. It demonstrates the suitable level of detail that should be
expected for manuals. It should be noted that lifeboat systems are different from each other and
some specifications in the example manual are not applicable to lifeboat systems of other types. The
example attached at appendix is a model manual which is recommended as an example for
developing specific manuals for lifeboat systems launched by falls, but the same general principles
should be used for manuals for freefall lifeboat systems. * * *
MSC.1/Circ.1205 ANNEX Page 6
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APPENDIX
EXAMPLE OPERATION AND MAINTENANCE MANUAL FOR A LIFEBOAT SYSTEM*
Table of contents
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