TM 5-5420-278-100026 000026 00-1HIGH-BANK LAUNCH OF BAYCAUTIONA high-bank launch is performed where launch siteconditions require the bay to be slowly lowered into thewater from a height of 5–28 ft (1.5–8.5 m) with thetransporter’s LHS and BAP winch, and then unfoldedby manually releasing the bay’s travel latch with alanyard. Ensure launch site conditions are met ordamage to equipment may result. Assistant will act as a ground guide when maneuveringCBT and during operation of the LHS. Failure tocomply may result in damage to equipment. NOTEDuring all transporter operations, the CBT operatorwill drive and be responsible for the operation of theLHS via the cab control box or remote control unit. Theassistant will act as a ground guide, be responsible fordirecting the operator using hand signals, and assistthe operator as needed.To perform a high-bank launch, the transporter winchmust be fitted with the HEMTT 20 ton snatch block(BII, TM 9-2320-279-10) and the winch extensionassembly (AAL, TM 5-5420-234-14&P). Use the IRBhoisting gear (lifting sling) only for lifting bays (WP 0070 00, Item 4).a. Ensure launch site conditions exist for a high-bank launch of bay (WP 0019 00, Launch Condition Requirements). If launch site conditions donot meet requirements for a high-bank launch, refer to Deployment byHelicopter (WP 0027 00) or Operation Under Unusual Conditions(WP 0045 00).b. Back up CBT parallel to river bank approximately 8 ft (2.5 m) from edge ofbank, then apply service brake (3), move transmission selector lever (2) to N(neutral), and pull PARKING BRAKE control (1) out.c. Unload bay to ground (WP 0023 00, Unloading Bay to Ground).
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