SITE REQUIREMENTS AND LAYOUTS - TM-5-5420-278-10

TRANSPORTER OPERATIONS SITE SURVEY - TM-5-5420-278-10_181

Site Requirements - TM-5-5420-278-10_183

TM-5-5420-278-10 M85 Tank Chassis Transporting: for Bridge Armored-Vehicle-Launched Scissoring Type Class 80 Manual
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TM 5-5420-278-10 0019 00 0019 00-2 TRANSPORTER OPERATIONS SITE SURVEY (Contd) WARNING Ensure water velocity is not above the specified limit for the launch method used. Failure to comply may result in damage to equipment or injury or death to personnel. g. The water velocity or current should not exceed the maximum specified limit for the launch method used. (Refer to WP 0019, table 2, for water velocity requirements for all conditions.) Notify your supervisor if you believe the water velocity at the launch site is greater than the specified limit. WARNING If unloading the BAP to the ground, ensure the hold- down locks, winch frame locking levers, BAP air hose, and winch fluid hoses are in the correct position. Failure to comply will result in damage to equipment and possible injury or death to personnel. h. If unloading the BAP to the ground at the launch site, ensure the handle on both hold-down locks is pulled out to the DISENGAGED position, both winch frame locking levers are in the UP position, and the BAP air hose and winch fluid hoses are disconnected and secured in their stowed positions. SITE REQUIREMENTS AND LAYOUTS Site selection for bridging or rafting operations depends on several factors and is usually a compromise of tactical and technical requirements. Determining if the desired site location is suitable for the construction of a bridge or raft is essential to the success and safety of the bridge company. A careful survey of the bridge or raft site should be made by reconnaissance, not the operator/crew. However, the operator must understand and observe the site requirements when performing raft and bridge operations. 1. Tactical Requirements. The ability of the US Army to cross a river quickly and efficiently is critical. Where no fording sites, existing bridges, civilian ferries, armored vehicle launch bridges, assault boats, or amphibious vehicles are available to advance army forces across a river, the IRB will be used. Site selection is the result of a commander's strategic decision based on three types of river crossing operations: hasty, deliberate, and retrograde crossings. a. Hasty river crossings are usually conducted as a continuation of an attack by army forces using a river site that permits a crossing with little or no loss of momentum. If site conditions exist to permit rafting operations, the IRB may be used where the commander decides to reinforce assault forces with armored vehicles and anti-armor weapons. b. The deliberate river crossing requires a buildup of firepower and the use of IRB equipment to carry it, which entails the need for detailed planning and centralized control of the site. The deliberate crossing consists of an assault phase, a rafting phase, and a bridging phase. c. The retrograde crossing is a defensive operation intended to protect the

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