The baggage of the boat sail is proportional to the size of the boat, but also on a big boat retains a fundamental characteristic: it is small, the smaller and less cumbersome as possible and, more importantly, what you need fits easily in a pocket of a sailor's canvas, even waterproof, easy to fold and store in the cabin.
What should not miss in your bag for a summer cruise (well, everything you need for a week at sea)?
A couple of swimsuits
A sarong / beach towel
A pair of shorts
A pair of long pants
Two short-sleeved shirts, long-sleeved
A
A hat A pair of shoes with the soles white rubber
A pair of slippers
For girls a dress to go ashore
For boys wearing a shirt with long trousers.
a backpack for shore excursions.
fins and mask, sack cloth and a towel, if not already on board
Sunglasses
Sunscreens
Necessaire
Basta. Everything else is superfluous.
If you are going on the boat and your first experience, take a trip to a bookstore and buy the Little Blue Book of Sailing a pocket-sized booklet full of advice for those approaching sail for the first time.