I was curious enough to look it up.
Propulsionmarine.com says that their Catalina 30 draws 1.2 KW at 4 knots.
Bicycle Pedal Power Generator FAQ Frequently Asked Questions
This site puts the bike output at about 100 watts
So it seems like it would work fine.
You peddle every morning before work and every evening after work for an hour Mon to Fri and get 10 hours in then by Sat you have built up enough battery power to motor about 25 min to the outer harbor and back.
Should work fine.