1963 US Army Vietnam War Armor Operations ... - Survival Books

WWW.SURVIVALEBOOKS.COM- CUR_ DIRENT CTION_:OFFLOAT__EO S iNCEFigur e 27. Float timing device over a rneasvred distance.(3) Debris. Fast-moving streams often (approximately 2 miles per hour) tocarry large quantities of logs, brush,avoid a large bow wave. When deandother debris. In cold climates, scending steep banks, the vehicle willchunks of ice may be floating in atend to dive unless the approach isstream. Debris is a serious hazard toslow enough to allow the bow to float.the armored personnel carrier; a sin- (2) The most common way to expressgle piece can foul a track and put theslope is in percent (fig. 29). Thus, acarrier out of control. 1 percent slope rises or descends 1d. Slope of Entrances and Exits. unit in a horizontal distance of 100(1) Gently sloping entrances and exits are units; a 10 percent slopes rises or dedesirable.However, even on the mostcends 10 feet in 100 feet, or 10 yardsgradual slopes, the armored personnel in 100 yards, etc. The formula forcarrier must enter the water slowlypercent slope is-VERTICAL DISTANCEHORIZONTAL DISTANCE X < 100 = SLOPE IN PERCENT174 AGO 9139A