TM  5-5420-209-12 Table  2-17.  Longitudinal  Railing  Capacities. Rating  Velocity  (ft/see) Raft  Size 0-3 4 5 6 7 8 9 10 3-bay 45 45 45 40 40 35 30 25 4-bay 70 70 70 60 60 60 55 45 5-bay 75 75 75 70 70 70 60 60 6-bay 80 80 80 70 70 70 70 (Track) 70 6-bay 96 96 96 96 96 96 70 (wheel) 70 Notes: 1. Table shows load (MLC) capacity based on one vehicle positioned on the raft centerline and centered on the deck. The values shown for 3-/4-/5 bay rafts apply  for wheeled or tracked vehicles. The values shown for a 6-bay raft apply for track/wheel vehicles as shown. 2. Two bridge boats are required for propulsion with any raft in the table. 3. This configuration is to be used only where current velocities in loading and unloading areas are 5 fps or less. 4. Ratings apply only with bottom of ramp ends raised 1 foot clear of water. Ramps raised for loading must be lowered before raft is  underway. (h) (i) (j) (k) Secure raft to shore. Open pump access cover (20) and set pump control valve (21) to TRAFFIC position, close vent valve (22), and close cover (20). Repeat Step (i) for remaining pump. Lower  approach  ramps  (23)  and  unload  vehicles. 2-123