hull, before rigging, no hardware. Estimated hull weight with tanks and
hardware: 2,0002 lbs.
All specifications are approximate and subject to changes in function
of the mood of the designer and the skills of the builder . . .
Pilot 21 (P21) is a larger version of our P19, the vee hull version of
our HM19. The
proven hull shape with a typical moderate vee similar to the C21. 45 degrees
at the cutwater, 10 degrees at the transom. Sufficient deadrise to run
smoothly in bad weather but moderate enough to provide good stability
at slow speed without the wild roll typical of deeper vee hulls.
The hull shape is related to our C21 but not identical: see the bow and
sheerline for example. The topsides are built with one wide panel instead
of two overlapping ones.
generous freeboard and the classic sheer are tried and true features contributing
to seaworthiness. This boat will negotiate both head and following seas
with ease. Lightly loaded, the P21 will require 90 HP to cruise in the
low 30 mph range. 125 HP is recommended for a well equipped boat at full
This boats transom is designed for a standard 25" shaft. The transom
can easily be modified to accept other shaft lengths.
The self bailing cockpit depth minimum 26" with 12" wide gunwales,
is another important element of safety. Her PPI is at DWL is 543 lbs (247
kg). 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 150 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.
The pilothouse has 6' headroom in the middle and there is ample sitting
headroom in the cabin.
stern to bow:
Large lockers on each side of the motorwell can be used for storage or
bait well. The self-bailing cockpit sole is high enough to stay above
the waterline until the displacement reaches 3,500 lbs.
Under the cockpit floor, we show 60 gallons fixed fuel tanks.
Under the nicely cambered pilothouse roof, the rear frame of the pilothouse
doubles as a grabrail.
The skipper will find enough room in front of the wheel to mount electronics
and we use the extension of the cabin roof as a dashboard. The same surface
on the port side can be a small chart table.
Access to the cabin is through an open companionway but feel free to install
a sliding hatch.
The vee berth is 7'-4" long and a Porta-Potti slides under the mid section.
On deck, the 8" wide gunwales extend all along the pilothouse and cabin
side. Handrails on each roof helps circulation forward.
construction is epoxy-fiberglass-plywood composite, a second-generation
stitch and glue system designed for efficient and fast building.
This building method combines the ease of stitch and glue (plywood-epoxy)
with the strength, lightweight, longevity and low maintenance of a high
tech composite hull.
The hull material is a fiberglass sandwich with a plywood core.
The builder assembles the hull as a plywood boat first, then build the
outside and inside fiberglass skins to produce a strong composite hull
without all the time consuming woodwork associated with plywood on frame.
We specify high performance directional glass and epoxy. While that type
of fiberglass cost a little bit more, we save on resin and weight.
The bottom panels are more than 3/8" thick: thicker and stronger than
the typical production fiberglass boat in that size.
internal framing is characteristic of a fiberglass or composite boat:
a monocoque structure made of interlocking bulkheads and stringers, tabbed
to the hull and fiberglass chines and keel.
the hull can be built without it, we strongly recommend building her upside
down on a simple jig.
Our jig system is very uncomplicated, self-aligning and economical since
we use the internal framing of the hull as molds. Our jig does not require
all the precautions, alignments or even a perfectly flat floor that are
a must for traditional boat building. See a complete hull building
all our stitch and glue boats, the P21 is easier to build than other plywood
or fiberglass boats. No woodworking skills or special tools are required.
The plans include all dimensions and some full size patterns to cut all
the hull parts flat on the shop floor. No scarfing required. While she
can be build as a first project, some experience with our building methods
will save time and materials. If you have never build a boat, try our
free canoe plans first.
of the reasons why our boats are easier to build is the level of details
on the plans. For example, for the fuel system, we show not only the fuel
tanks (standard part with part number) and their installation but fuel
fill, fuel pick-up and fuel vent with part numbers, all in conformity
with the ABYC and ISO regulations. Most other boat plans do not even show
a fuel tank! We also show rigging tubes for electricity, controls and
engine harness, inspection plates, removable fuel tank hatch, foam location
between the stringers, hatches dimensions and part numbers, drainage of
the casting deck hatches, make and part number for the swing back seat,
rod holders in gunwale etc. etc.
All the plywood parts, even the smallest ones are shown with dimensions
including cabin and pilot house parts.
is room for a bench in the rear if one needs more seating.
Under the gunwales, the frames can be cut to act as rod holders. There
is ample storage room in the seat boxes: they extend all the way to the
hull sides. With the proper foam insulation, a seatbox can be used as
an ice box.
The pilothouse can be partially or completed closed with Plexiglas or
Lexan but builders should keep the size of the boat in mind and not make
the topsides too heavy or excessively increase windage. Framed or hinged
windows are possible but keep them light.
We show a small hatch and portholes in the roof and cabin sides for light
The P21 can be made unsinkable with expandable buoyancy foam under the
sole while foam sheets glued under the gunwales will guarantee upright
boat can be built with a closed transom for bracket installation.
Of Materials: (Excerpts
from our BOM)
BOM list materials based on our standard layout and includes a 15% waste
factor for resin and fiberglass. For plywood, we use standard sheets 4'
x 8' (122 x 244 cm). Meranti marine BS1088 is the plywood of choice for
this planing hull.
See our online plywood store
for the best prices on marine plywood.