TM 5-5420-278-10 0019 00 0019 00-10 BAYS BOATS BRIDGE LENGTH LAUNCH SITES FEET (METERS) RAMP INTERIOR DESIRED NEED DESIRED 87.8 (26.78) 2 2 2 3 4 109.8 (33.48) 2 3 2 4 4 131.8 (40.19) 2 4 2 4 5 153.8 (46.89) 2 5 2 5 5 175.8 (53.60) 2 6 3 5 6 197.8 (60.30) 2 7 3 6 6 219.8 (67.01) 2 8 3 6 7 241.8 (73.71) 2 9 3 6 7 263.8 (80.42) 2 10 3 7 7 Additional (Note 1) 0–66 (20) – 1–3 – 1 1 Additional (Note 2) 0–88 (26.8) – 1–3 – 1 1 Additional (Note 3) 0–132 (40) – 1–3 – 1 1 SITE REQUIREMENTS AND LAYOUTS (Contd) Table 2. Bridge Assembly Requirements. Notes: 1. In currents of 6–8 feet (1.8–2.4 m) per second: for each additional bridge length, increase of 0–66 feet (0–20.1 m). Add the indicated number of boats. 2. In currents of 3–6 feet (91.4 cm–1.8 m) per second: for each additional bridge length, increase of 0–88 feet (0–26.8 m). Add the indicated number of boats. 3. In currents up to 3 feet (91.4 cm) per second: for each additional bridge length, increase of 0–132 feet (0–40.2 m). Add the indicated number of boats (includes the safety boat, but not the backup boats).