Has anyone actually sailed for more than a few days using a 20 minute wake up device??? You need REM sleep to stay lucid over time. Going for more than a couple of days with a 20 minute sleep routine seems like it would be suicide after a very few days at sea.
Personally, stay awake when coastal sailing. Haven't made a passage
longer than 3 nights/4 days. After 3 nights without sleep you don't need a television for entertainment. Have hove to a couple of times when I didn't want to arrive at a destination
during the night.
More than 50 miles offshore
things get very lonely. Unless you are near a choke point like the Panama Canal
or major ports
it's a mostly empty ocean. Even with AIS, haven't encountered more than a couple of ships on a several thousand mile passage
. I sleep when I feel like it when more than 50 miles offshore
. Normally wake up several times during the night no matter where I'm at. On a passage, get up and look around, make any changes to the heading or sails
and go back to sleep. When conditions permit
will usually sleep on the bridge deck
next to the companionway
in the cockpit
. Most of my passages have been made in trade wind
conditions with steady winds so don't reduce sail at night. Can't remember ever having to get up to reef or reduce sail. Have had a few instances where wind has died sailing into the
Doldrums and such.