TM 5-1940-322-10
OPERATOR INSTRUCTIONS
BRIDGE ERECTION BOAT (BEB)
MK II-S
NSN 1940-01-526-0770
P/N 12492423
RAFT ASSEMBLY
Ramp and interior bays may be joined to construct a raft for transporting personnel
and equipment across bodies of water. The number of bays required for rafting is
dependent upon the Military Load Class (MLC) of traffic to be transported,
dimensions of equipment, and current velocity. The number of boats required for safe
operation of a particular raft depends upon the type of raft, the MLC of the load, and
current velocity. A raft requires the use of two ramp bays and a minimum of three
interior bays to enable loading and unloading from either end. A raft requires a
minimum of three crewmembers (one raft commander and two assistants), and each
BEB will have an operator and a minimum of one crewmember. The raft commander
will direct boat operators during raft assembly by use of hand signals (WP 0007 00).
DIFFERENCES BETWEEN MODELS
There are two styles of bridge bays, Improved Ribbon Bridge (IRB) and Improved
Float Bridge (IFB) (The IFB is commonly called a Standard Ribbon Bridge (SRB)).
The IRB and SRB can be distinguished by looking at the sides where they meet the
water. SRB bays are flat. IRB bays are curved. Both bays are handled and assembled
in the same manner. The procedures that follow are written for the IRB. Do not mix
IRB and SRB bays in a raft. Refer to TM 5-5420-278-10 for operation of the IRB.
Refer to TM 5-5420-209-12 for operation of the SRB.
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