Yacht sizes: 30, 40, 50, 60 ft. What actually changes?
Going from 30 to 60 ft multiplies volume, weight and cost far faster than length. See what changes in berth fees, crew, systems and haul-out.
Updated 2 min read
Key points
- A 40 ft boat has about 2.4 times the volume of a 30 ft boat, because volume rises with the cube of length.
- Around 45 ft, a single person can no longer handle the boat in all conditions without a bow thruster or crew.
- Berth fees, insurance and haul-out are all priced by length.
What the numbers mean
30 ft is 9.1 m, 40 ft is 12.2 m, 50 ft is 15.2 m and 60 ft is 18.3 m. Weight and interior volume rise with the cube of length, so a 40 ft boat holds about 2.4 times what a 30 ft boat holds (1.33 cubed). A 30 ft sailboat weighs roughly 4 to 5 tonnes. A 40 ft boat weighs 8 to 10 tonnes, and a 50 ft boat 14 to 18 tonnes. Cost follows the weight.
30 ft (9 m)
One person can handle it. A couple can sail it for a week. Two small cabins at most, a basic galley and a single heads. Fits most berths and most boatyards. Right for day trips and short stays.
40 ft (12 m)
The size where owners can live aboard comfortably for a week. Two or three cabins, one or two heads, a proper galley and room for four to six guests. A couple can still run it without crew. Most buyers on the Balearic route choose this size.
50 ft (15 m)
A big step. Systems multiply: air conditioning, a generator, a bow thruster and often a watermaker. Winches and lines load up, and a new set of sails or a rebuilt generator costs thousands of euros. Many owners hire a part-time skipper or deckhand.
60 ft (18 m)
A crewed boat in practice. Docking in a crosswind with a 60 ft hull needs two people and thrusters. Berths for this size are scarce and expensive around Barcelona. See Yacht management and crew for larger yachts.
What scales with length
- Berth fees, which are charged per metre (or per square metre of length times beam).
- Insurance premiums and the survey fee.
- Haul-out costs and antifouling paint: roughly proportional to the hull area.
- Engine size, fuel burn, anchor and chain weight.
Choosing a size
List the number of people who sleep aboard on a normal trip. Then add one cabin of margin and not more. A smaller boat used 40 days a year costs less per day than a larger boat used 15. See How much yacht can you actually afford?.
Related guides
General information, not legal, tax or financial advice. Rules change; check your own case with a professional or ask us.