Classic 21 by

[C21] An offshore capable sportfishing outboard boat

Length overall21'6.41 m
Beam8' 6"2.59 m
Draft10"0.25 m
Weight1303 lbs591 kg
Engine power90 - 125
Hull construction Stich-n-glue
See also Classic 19Pilot 21Open Pilot 21Nina 22



The C21 is a true offshore boat with just the right hull shape for fishing or family outings.

The proven hull shape with a typical 12 degrees moderate vee is has sufficient deadrise to run smoothly in bad weather but is moderate enough to provide good stability at slow speed without the wild roll typical of deeper vee hulls.

The generous freeboard and the classic sheer are also tried and true features contributing to seaworthiness. This boat will negotiate both head and following seas with ease. While it is not very clear on the pictures, the C21 (just as the C19), has a styleline in the topside. Not only does it add strength but it is esthetically pleasing and easier to build.

The self bailing cockpit has a minimum of 30" with 12" wide gunwales, is another important element of safety. Thanks to the freeboard and transom design, she can be rated to a max. capacity of eight persons (USCG) and we recommend engines in the 90- to 125 HP range. While stronger than the typical production fiberglass boat of that size, she is also lighter and does not require as much HP (or fuel) to cruise at the same speed: a 70 HP will get her on plane.

With 4 persons and gear, rigged with a 90 HP, she will do 30 mph and up to 37 with a 125 HP. Those are very conservative figures and with some tinkering and attention to weight, she will go much faster. The 80 gallons of fuel (in two standard tanks) will give her the range required for long offshore runs.

This boats transom is designed for a standard 25" shaft. The transom can easily be modified to accept other shaft lengths.


The first option to consider should be positive and upright buoyancy (unsinkable boat). This can easily be easily achieved with our marine flotation foam. For production boats in that size, the USCG requires upright floatation.

The basic center console layout is ideal for the fisherman. A cooler under the swing back seat, baitwell in the forward part of the console of better, in one the stern lockers, fish box and storage under the casting deck, rod holders under the gunwales.

The plans include a standard center console drawing with dimensions to cut all parts.

A pilothouse style console can be fitted as an option. Our console plans show 3 different types. The picture below shows the reverse rake model.

For family outings, we may want more seating. Some of our pictures show optional quarter seats but a fixed or removable bench can also be installed all across the boat, in front of the motor well. An outboard bracket can be used to free even more space for storage in the stern. Some details can be changed or added. Standard bow pulpits, T-tops or bimini tops, windshields are easy to fit.

A last option is a twin engine layout. The plans show two different motorwells: one for a single outboard with a standard 25" shaft and an optional twin engine motorwell. Each layout is compliant with international industry standards: all recent outboards will fit.

Classic 21

Dual console layout
Dual console layout

See also

Design Length Beam Sail area Engine power Compare
Classic 19 Classic 19 by
[C19] An offshore capable sportfishing outboard boat
19' 2"
5.85 m
2.44 m
- 90 - 150
Pilot 21 Pilot 21 by
[P21] A larger version of P19, the vee hull version of HM19
6.38 m
8' 6"
2.59 m
- 90 - 150
Open Pilot 21 Open Pilot 21 by
[OP21] The Open Pilot 21 is a larger, open cockpit version of P19
6.38 m
8' 6"
2.59 m
- 90 - 150
Nina 22 Nina 22 by
[LB22] A small traditional lobster boat that can be used as a fishing launch or picnic boat
21' 9"
6.63 m
6' 11"
2.11 m
- 30 - 50

Boats about same size as Classic 21

Extreme Flats 20   Extreme Flats 20
[XF20] A flats boat with a tunnel

LOA: 20' 4"/6.2 m   compare
Panga 20   Panga 20
[PG20] A rugged work boat style vee hull, simple to build and economical to operate

LOA: 20' 4"/6.2 m   compare
Nina 22   Nina 22
[LB22] A small traditional lobster boat that can be used as a fishing launch or picnic boat

LOA: 21' 9"/6.63 m   compare
Phantom 22   Phantom 22
[PH22] A bay boat based on Phantoms 16 and 18

LOA: 21' 10"/6.66 m   compare

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