The International Bareboat Skipper Course has two components - Theory and Practical.
Day 1 is Theory - from 9am to 5pm
Days 2, 3 & 4 are Practical - this runs from 9am Friday to 5pm Sunday.
It is not for beginners and the recommended entry level requirements are a VHF maritime radio operators certificate, and to have logged over 200 nautical miles and 10 days at sea before advancing to this level.
The recommended minimum age to obtain this certification is 18.