Carpe Noctem. Seize the night. Boating at night is different. As different as, well, night and day. To watch the sunset and see the stars come out through the open hatch cover is an experience like no other.
It never takes long to drift off to sleep on a boat and 'lights out' happens before you reach the end of the book. Slip into your bunk, and be serenaded to sleep by the water lapping against the hull.
And early to bed means early to rise and, on a boat, you tend to wake not long after sun-up to light the kerosene stove for a breaky of bacon and eggs and a hot cup of tea.
Summer is the time to be sleeping aboard. Try it sometime!