specs + or - 10% depending on builder's workmanship. Hull weight means
complete but empty with minimal hardware.Displacement is designed displacement,
not maximum. Fuel
capacity can be increased with additonal tanks.
DE25 is the enlarged and stretched, long cabin version of our DE23. She
combines traditional styling with an efficient, easy to build planing
hull. She is not a true lobster boat of the double wedge type or a pure
fast planing hull. The hull type is similar to what is now frequently
called a picnic boat; a seaworthy planing boat but the topsides are more
in the Down East cruising boat style. We kept the deep forefoot of the
modern fast lobster boat hull but the underbody is a true monohedron.
This means that the transition to planing speeds will be smooth without
any excessive change of trim and without the wasteful suction of warped
bottoms running at an S/L higher than 2. (S/L ratio is speed in knots divided by square root
of WL in feet. Displacement boats are the ones with an S/L<1.3, planing
boats have S/L>2) The Down East 25 will perform well at displacement speeds in
bad weather and run efficiently at moderate planing speeds with relatively
The Down East 25 has an enormous capacity: she can be loaded with up to
2,000 lbs. of passengers, engine and gear.
DE25 has maximum 6' 2" (185 cm) of standing headroom in the pilot
house. The cockpit floor is well above the waterline and self-bailing.
calculated top speeds at WOT with a new engine, correct prop, are as follow:
are conservative figures, with proper tuning many of our builders attain
more than our calculated speeds. Note the influence of weight on speed.
DE25 is not designed to cruise above 30 mph.
Compared to traditional lobster boat types, the Down East 25 hard-chine
vee bottom hull will not only be faster than the typical round bilge type
but also deflects spray more efficiently.
The reduced deadrise aft increases stability at slow speed or rest.
She differs from our faster planing hulls through her deeper forefoot
and generous skeg for stability and tracking.
transom is designed for a standard 20" shaft but can easily be modified
to accept other shaft lengths like 25'.
plans include drawings for a full transom with bracket single or twin
(bracket kits available) and for a traditional motorwell.
The DE25 long cabint looks very much like a slightly wider and 30"
longer DE23: same accomodations inside but much longer cabin.
safe self-bailing cockpit is deep and wide: 4'-3"' long (1,30 m),
8' wide (2,40 m) and 28" deep (71 cm). The full height motor well bulkhead
provides excellent protection from following seas. The cockpit is self-bailing
but the cabin sole is lower than the cockpit. To keep the inside floor
dry, there is small step between pilot house and cabin, see the options
paragraph. The pilothouse offers standing headroom: 6' 2" in the middle
(185 cm), the forward cabin with two bunks has sitting headroom.
dinette is can be lowered to make a 34" (86 cm) wide berth.
marine head is located all the way forward and separated from the cabin
by a solid door. There is room for a black water tank.
A sturdy samson post is welded to the forward bulkhead.
It is followed by a large cabin with two berths, 6' 2" long (185
cm) and 32" wide (81 cm).
Down East 25 is a composite epoxy-fiberglass-plywood boat. The hull is
build around a simple plywood core sandwiched between layers of directional
fiberglass in epoxy. This method produces a high quality fiberglass boat
using methods within the reach of any amateur builder. The hull is assembled
on a simple jig made from the bulkheads, frames and some temporary molds.
See a complete step by
step description of the method here. The plans show all necessary
dimensions: all bulkheads, frames, molds and transom dimensions plus accurate
expanded plates dimensions for all hull panels. No lofting, no need to
measure from the jig as in plywood on frame construction. We did all the
calculations for you. The egg-crate structure is stronger than traditional
framing and the space under the sole, between the stringers, can be filled
with flotation foam to make the boat unsinkable.
standard cabin and pilothouse is made from a foam sandwich composite for
lighter weight and superior insulation but we also show a plywood superstructure
There are several advantages to a foam sandwich superstructure. Lighter
topsides means better performance, improved stability and easier towing
on the road.
The plans show specifications for the two methods: cabin made of regular
plywood and epoxy and our sandwich panels. We can supply all the materials
for either method.
DE25 is easy to build: a plywood shell assembled the stitch and glue way
but fiberglassed on each side. No woodworking skills or special tools
are required. The plans include all dimensions and patterns to cut all
the hull parts flat on the shop floor. No lofting, no beveling, no scarfing:
the sides and bottom are cut from standard 4x8 plywood (122x244cm), joined
with a simple fiberglass seam. All seams are taped with fiberglass and
epoxy, see our "How To" section for details. These epoxy seams are much
stronger than the plywood. The DE25 is a large boat. She is not difficult
to build but we recommend to build a small boat first if only to become
familiar with the material and technique
There are many possible options and we can not list them all.
DE25 exist in two versions: long cockpit or long cabin. See our plans
list for the other version.
interior layout can be changed to the buidler's preferences but no frames
and bulkheads can be removed. Those parts can alos not move more than
a few inches: consult us for changes.
outboard can be mounted in a motor well or on a transom bracket.
show an open cockpit but the builder can easily add benches, seats and
pilothouse door can be modified to use a high drop down board and shorter
doors. This will allow to safely leave the doors open offshore in bad
is room for a small emergency outboard (kicker) on the transom or on
plans show wide scuppers in the sides but through transom scupper are
pilothouse rear bulkhead can be left open and fitted with a roll up
windshield can be hinged to lift open.
and portholes are optional.
to the chain locker is shown from inside through a cut in the forward
bulkhead but the builder can also cut a deck hatch if he prefers.
capacity is ample with 42 gallons in two tanks but can be increased
with additional tanks.
DE25 can be made unsinkable with expandable buoyancy foam under the
sole and foam sheets glued under the gunwales for upright flotation.
Of Materials: (Excerpts
from our BOM)
BOM list materials based on our standard layout and includes a 15% waste
factor for fiberglass. For plywood, we use standard sheets 4' x 8' (122
x 244 cm). Please read the building notes and see the plans for detailed
We recommend Marine grade plywood BS1088 for the hull, either Meranti
or Okoume. Interior Structural components, such as stringers and bulkheads,
can be made of Marine BS1088 or quality BS6566. A note about BS6566: The
BS6566 is a low standard to reach, some BS6566 is poor quality, while
some is basically wood that just barely does not reach BS1088 standard.
We have had some orders of 6566 that we could not tell from 1088, while
other orders were full of small voids - for this reason we do not recommend
using it in the hull. Those interior parts can also be made of Marine
fir or quality exterior if there are no voids. The plywood represents
a smaller percentage of the total weight of the boat. The weight saving
of using Okoume vs. Meranti is about 10% hull weight for a 20' to 22'
power boat. For larger boats, the savings are even less. Does the weight
savings justify the extra cost; that is up to each builder.
The plywood or foam for the pilothouse is not included in this BOM: add
4 to 6 sheets. The fiberglass for the cabin and pilothosue is also not
included. Add around 20 yards of biaxial tape for each version, 10 yards
of woven fabric for the plywood cored version and 20 yards of biaxial
wide fabric for the foam cored version.
The cost of materials varies depending on your location, your choice of
epoxy brand, plywood type and options. Use our Bill Of Materials with
the local cost of materials or add our kits cost.