Encl (1) to COMDTINST 16151.1C
2. b.
(2)
(cont'd)
(a)
Direct Assistance (DA): Domestic icebreaking operations conducted to
assist a specific benefiting vessel(s). Assistance upon request and
convoying are common examples of DA.
(b)
Preventive Icebreaking (PI): Domestic icebreaking operations conducted
to assist commercial vessel movements for which specific vessel(s) can
not be readily identified. Channel maintenance and harbor breakout
operations are common examples of PI.
(c)
Flood Control/Prevention Workload (FC): Domestic icebreaking
operations for flood control and flood prevention, including frequency
for recurring operations.
(d)
Miscellaneous Assistance (MISC.): Includes all other cutter operations
for which DI employment hours are recorded, but not included in other
categories. Cutter transits in ice without an identifiable mission in other
categories should be reported here. Examples include assistance to
pleasure craft, other CG vessels and ferry transits.
(3)
Aerial Ice Reconnaissance: Includes those hours for aerial ice reconnaissance in
areas of responsibility, regardless of district affiliation of the units involved.
Only those hours for flights where ice reconnaissance is the primary mission
should be recorded. See Table III.
2
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