English

Surf manual for amphibious planners

"COMPHIBPAC Instruction 3840.3" -- Cover · "April 1953" -- Cover · Includes bibliographical references (p. XI-1) · Introduction -- Waves and swell : Relationship of terms ; Effect of ocean waves on the amphibious operation ; Determination of swell from weather maps ; Some basic consideration of the wave mechanism -- Surf and the surf surf zone : Introduction to certain terms ; Breaker types ; Effects of beach profile on surf ; The effect of breaker angle on landing craft ; Breaker period and its effect on landing craft ; Effect of bottom configuration on breakers ; Breaker height determination ; Estimating height of breakers ; Depth of breaking ; Speed of breakers ; Surf zone categories -- Factors affecting surf and surf zones : Sandbars ; Beach slope ; Tide ; Refraction ; Changes in bottom configuration -- Shore and tidal description : Offshore currents ; Shore currents ; Rip currents -- Landing craft casualties : Types and causes of landing craft casualties ; Swamping of land craft ; Broaching of land craft -- Surf in amphibious planning : Planning for wave, beach, and surf conditions ; Planning stage ; Information for D-Day ; Percentage of casualties in landings with LCVP & LCM

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