Aeronautical Information Manual (AIM), page 435
12/10/15 AIM 6-3-3. Ditching ProceduresFIG 6-3-1 FIG 6-3-3 Single Swell (15 knot wind) Double Swell (30 knot wind) PRIMARY SWELL SWELL SECONDARY SWELL G IN CH G IT IN ING D D CH EA DIT H ING AD HE WIND WINDFIG 6-3-4 (50 knot wind)FIG 6-3-2 Double Swell (15 knot wind) SWELL W W IN PRIMARY IN D D SWELL G IN TCH ING I D D EA H SECONDARY SWELL Aircraft with low landing speeds - land into the wind. Aircraft with high landing speeds - choose compromise heading between wind and swell. Both - land on back side of swell. Distress and Urgency Procedures 6-3-3
Page 435 of the Aeronautical Information Manual (AIM.pdf)
AIM: Official Guide to Basic Flight Information and ATC Procedures