Engineer Gap Crossing Planning. Instructor: . Purpose of the Training. Teach students the critical information requirements to properly plan for a wet gap crossing. Source Data. FM 3-90.12, Combined Arms Gap-Crossing Operations, Jul 08 FM 90-13, River Crossing Operations, Jan 98
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6 min to land, download, turn around
Moving at 4.5 m/s
6 min to upload
X 1.5 (if night)
46 (assuming 7 bay rafts)
3 x 4 x 1 x 1
X 1.5 (if night)
Crossing time for an HBCT CAB is 5.75 hours
Starting to cross at 21:00 means the unit will be complete by 02:45 hours
# of raft trips required
# of round trips per hour x # of rafts per centerline x
# of centerlines per crossing site x # of crossing sites
EN Equip Park
Min depth of water
Max depth of water
Swimming / Rope
Find out how many people need to cross as individuals vs traveling in a vehicle for each site.
Then find out how long you’re allocated for this type of movement. If the answer is as long as you need modify the “Time Allocated” cell to figure out how much time you require.
Consider tasking 1 boat per crossing site as a safety boat
Rafting Operations (Crossing Site 1)
The Brigade S3 has stated that he has to have at least a HBCT CAB Armor Company on the far side of the river before we can transition to building the ribbon bridge.