Millions of dollars in technology, thousands of years of development, and still the best way to hold a boat in place is a big lump on a string. Sometimes you just can't argue with physics.man that thumbnail made it look like it was way more intense that it really was.I was standing ''Sound & Security'' watch & wandered near the ''chain locker'' on the USS Sylvania. Being an oblivious 18 year old I wasn't aware the anchor was about to be dropped. The sound is indescribable. That was 1969 & my ears are still ringing!