In the Army, we decided to do the Combat Water Survival Test using the 10M board.  Just to dial it up.  It didn't seem that high until you go up there.  Then you had to blindfold your self and walk the plank to drop (w/ all your gear, you have to hit the bottom, un do every equipment and swim back up).  That walk, it did have a high pucker factor.,(reply>), @Connection Lost Sillyvillian. It's to simulate night/darkness and to make sure you you have your wits about you not lose your weapon or drown.,(reply>), Ah yes, most armed combat does take place blindfolded and underwater, after all.,(reply>), 😱😱😱😵‍💫,(reply>), Doing a 10m jump not blindfolded took me some courage already. <br>Doing it blindfolded, walking the plank with gear - oh f*** me.,(reply>), @James I think that's what the Japanese were trying to do but got sunk on the way there