56£ NICHOLLS'S SEAMANSHIP AND NAUTICAL KNOWLEDGE
this Regulation shall not operate to prevent the use of another form
of splice which can be shown to be as efficient as that laid down in
this Regulation.
No pulley block shall be used in hoisting or lowering unless the
safe working load is clearly stamped upon it.
Means shall be provided to enable any person using a chain or
wire rope sling to ascertain the safe working load for such chain or
sling under such conditions as it may be used.
(a) As regards chain slings, such means shall consist of marking
the safe working load in plain figures or letters upon the
sling or upon a tablet or ring of durable material attached
securely thereto.
(b) As regards wire rope slings, such means shall consist of either
the means specified in paragraph (a) above or a notice or
notices, so exhibited as to be easily read by any person
concerned, stating the safe working loads for the various
sizes of wire rope slings used.
Chains shall not be shortened by tying knots in them; and
suitable packing shall be provided to prevent the links coming into
contact with sharp edges of loads of hard material.
SAFETY PRECAUTIONS.
All motors, cog-wheels, chain and friction gearing, shafting, live
electric conductors and steam pipes shall (unless it can be shown that
by their position and construction they are equally safe to every
person employed as they would be if securely fenced) be securely
fenced so far as is practicable without impeding the safe working of
the ship and without infringing any requirement of the Board of
Trade.
Adequate measures shall be taken to prevent exhaust steam from,
and so far as is practicable live steam to, any crane or winch obscuring
any part of the decks, gangways, stages, wharf, or quay where
any person is employed in the processes.
'Appropriate measures shall be taken to prevent the foot of a
derrick being accidentally lifted out of its socket or support.
Precautions shall be taken to facilitate the escape of the workers
when employed in a hold or on 'tween decks in dealing with coal
or other bulk cargo*