Enclosure (1) to COMDTINST 16114.20
a. CURRENT FORCE: Our current shore-based response boat force mix, with the
exception of recent 47' MLB siting analysis, has historically been based on locally
identified operational requirements. Unit boat allowance changes have often been
influenced by current operational commander mission focus and vary considerably in
articulated justification and analysis. Boat type designations have been based on a
combination of size, construction and mission requirement. This method of classifying
boats has led to a diverse, conflicting and confusing mix of boat type designations. The
following tables list our current boat type designations by general category.
(1) Heavy Weather Assets:
Boat Class
47' Motor Lifeboat (MLB)
44` Motor Lifeboat (MLB)
52' Motor Lifeboat (MLB)
30' Surf Rescue Boat (SRB)
Boat Class Description: Although varying in overall capability, all are
designed to operate in heavy weather (greater than 8'seas and 30 kt
winds), and are self bailing, self-righting boats.
(2) Large/Medium Response Assets:
Boat Class
41' Utility Boat, Big (UTB)
Utility Boat, Medium (UTM - 25' - 40' 11" closed construction,
fiberglass or aluminum hulled boat which may have fendering, and has
installed electronics and engines)
hulled boat with installed pneumatic sponsons)
Independent Maritime Response Vessel (IMARV 50' & 55') Note:
This boat type is being phased out and shore-based units will assume its
missions.
Boat Class Description: Varying significantly in capability, all are
designed to operate in moderate weather and sea conditions (up to 8'
seas and 30 kt winds) where speed and maneuverability are needed.
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