145An employer shall ensure that a boatswain’s chair has a seat at least 600 mm long and 250 mm wide that is of one piece construction capable of supporting 224 kg that
(a)
is supported by a sling that crosses underneath the seat, in accordance with paragraph 142(4)(b), or
(b)
is a manufactured system providing equivalent protection.
145An employer shall ensure that a boatswain’s chair has a seat at least 600 mm long and 250 mm wide that is of one piece construction capable of supporting 224 kg that
(a)
is supported by a sling that crosses underneath the seat, in accordance with paragraph 142(4)(b), or
(b)
is a manufactured system providing equivalent protection.
145An employer shall ensure that a bosun’s chair is adequately suspended from four corners with ropes crossed diagonally beneath the seat or is suspended in an equally stable and strong manner.