[MarcHall]

I\
.....I have a couple of kitchen digital timers. I set one at 20 minutes and one at 30 incase i miss the first. And a big alarm clock if i sleep through both!

Get plenty of sleep! Its better to arrived refreshed than being tired.
......

Mark

I find the Watch Commander from SailSafely really useful for setting sleep/nap alarms while underway. Set the interval and reset it within interval time and no alarm sounds. Quiet alarm sounds if the reset is not hit within the interval. Louder and louder alarms then sound until the timer is reset.

Marc Hall
Crazy Fish - Maintaining, Upgrading and Sailing a Crealock 37