any
officer or
petty officer qualified in
dock and
bridge duties wears insignia on the
right shoulder or collar. Members of the
company not so qualified wear insignia on the
left shoulder or collar. Right arm insignia succeeds to
command of any
party or activity at
sea or shore. Only members of the
company with right arm insignia succeed to
command of parties or ships ashore or at
sea in the absence of their
senior or when he is disabled for any
reason. Only those with right arm insignia may take over deck or
bridge officer or
petty officer duties when a vacancy occurs due to absence,
emergency or illness. This is also true of shore portion.
(FO 79)