Yes- but its unlikely.
A small sailboat can capsize and swamp pretty easy. A small sailboat does not have a centerboard. This makes the sailboat hard to keep in an upright position.
Capsize
Have up to much sail, surf waves, or break off the keel.
Depends. Size is not the predominant factor when determining speed for a sailboat. Depends on the wind condidtions
51 foot Formosa Ketch
$1,500 per linear foot. Or so.
I don't see why not: Don't be scared, be prepared!
10-15 knots in a good gust of wind
Generally cruise ships avoid conditions that could make them capsize, but yes it is technically possible for a cruise ship to capsize.
the people in the boat had to keep still or the boat would capsize
I don't see why not: Don't be scared, be prepared!