Motor Boats 21' to 30'

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MOTOR BOAT DESIGNS & PLANS
FOR MOTOR BOATS 21' TO 30' IN LENGTH

 

Study Plans are available for some of these designs - remember a study plan gives you more details and a wood materials list usually on two A1 sheets, so that you can cost out a project before ordering the full plans. When you order the full construction plans you do not need to order the study plan as well, as all the study details are on the full plans.

We have 11 designs, of various different styles and types

 

Note - In the particulars for each design, the dry weight is given for guidance only and will vary depending on the grade/density of plywood and solid wood used - different thicknesses of ply are often used by builders and the dry weight figure is based on the thinnest ply specified.
Also the Guidance Use comments are given in good faith and are based on feedback from previous builders etc and based on standard weight adults - contact us if you want further clarification before ordering/building.
Speed and power requirements are also based on feedback and estimates and are for guidance only - actual speeds attained will depend on loading etc.
E & OE


Motor Boats on this Page

Power 2 Power 3 26' GP Workboat 21' Ijssel Launch Lambay Island 22 Power 225

27' Mylor Fishing Boat

30' Ijssel Launch

23' Canal Cruiser

22' Rufus

26' Ijssel Launch

 

POWER 2

Power 2Power 2

A 21’ x 7’ bigger sister to the Power 1 design using the same easy construction method and having a similar double chine construction with a flat bottom panel simplifying her building and producing an easy planing hull form. The hull, seats and cabin take around 13 sheets of 9mm and 5 sheets of 12mm ply and she weighs approx. 500 lbs. excl. engine.
Both the Power 1 and 2 designs are designed for multi role use either as fast launches or as load carriers and because both have parallel sectional shapes aft, they can be shortened or stretched in length to suit your own requirements. One example of a Power 2 stretched to 24’ has been used as a dive support craft in the Bristol Channel and Irish Sea. With twin 40 hp outboards and fully loaded she could plane with speeds of over 30 knots.
Below and right, an example by Brev Jones.

Power 2 Particulars

LOA 21' 6.41m
Beam 7' 2.13m
Hull Mid Depth 2'9" 0.84m
Draft 14" 0.36m
Maximum Headroom 6' 1.83m
Approx. Dry Weight 500 lbs 227 kg
Engine Up to 150 hp outboard  
Speed 30 knots with 80 hp  

Hull Shape

U - flat bottom with 2 planks per side
Construction Methods Stitch and tape
Major plywood requirements for hull 13 x 9mm sheets
5 x 12mm sheets
Guidance Use Coastal
Drawing/Design Package 4 x A1 drawings + 6 x A4 instruction/spec sheets
Additions and alterations included with the plans Mark 2 version with 21' length and 3 planks per side

 

POWER 2 FULL PLANS COST 

UK/EU - FULL PLAN £85 (incl. VAT)           

USA/ELSEWHERE - FULL PLAN £72 ($115)


 
POWER 3  
 
Soon after our Power 2.2 left the drawing board, we were asked to extend it and produce a design which, in a compact form, could accommodate a large aft cabin with a central wheelhouse and forward dinette. So the beam has been increased to 8’10’’ and the length to 24’7’’ but the same easy riding ‘U’ hull form with double chine has been used. This gives plenty of internal volume and weight carrying capacity along with high stability.
The plans for the Power 3 show details for a forward dinette with a good sized galley and a separate WC and shower compartment. The wheelhouse has an ‘L’ shaped settee which can also form a bunk and the aft compartment has room for a double berth along with a dresser. The drawings show a single 30 hp engine arrangement but twin 50 hp engines could be installed. Construction details are given for both ply/epoxy construction using computer generated hull panel shapes and for ply construction over a framework of ply bulkheads and stringers. LOA 24’7’’ (7.50m); Beam 8’10’’ (2.70m); Approx. Draft 2’6’’ (0.74m); Displ. 6500 lbs (2950 kg).
 
 
Power 3  

Power 3 Particulars

LOA 24'7" 7.5m
Beam 8'10" 2.7m
Hull Mid Depth 3' 11" 1.2m
Draft 2'6" 0.74m
Maximum Headroom (cabin)
(wheelhouse)
5'7"
6'3"
1.7m
1.9m
Displacement 6500 lbs 2950 kg
Engine 30 - 50 hp inboard  

Hull Shape

V bottom with 3 planks per side
Construction Methods Ply over frame and stitch and tape
Major plywood requirements for hull For hull :-
18 x 6mm sheets
6 x 9mm sheets
8 x 12mm sheets
For deck/superstructure :-
13 x 6mm sheets
8 x 9mm sheets
Guidance Use Coastal/offshore
Drawing/Design Package 9 x A1 drawings + 12 x A4 instruction/spec sheets
Additions and alterations included with the plans 1930's style hull/cabin details
Outboard well

 

POWER 3 PLANS PRICE

UK/EU - STUDY PLAN £20.00/FULL PLANS £310 (incl. VAT)
USA/ELSEWHERE - STUDY PLAN £17.00/FULL PLANS £264 ($27/$422)

 
26' GENERAL PURPOSE WORKBOAT
This is a general purpose 26' workboat with a beam of 8'4". Construction consists of pre-shaped ply bulkheads and girders which are slotted together. Chine girders are then fitted and the pre-shaped hull skin then applied. Details are shown for the construction of the hull and basic deck and superstructure and spaces are given for the internal fit out which may be altered to suit. She will accommodate a wc, 2 berth saloon, galley and double berth and has a large cockpit/workspace aft. She is designed to take a couple of large outboard engines. She has a transom bow above the waterline to increase deck space and for bow mooring.
Plans for the hull, deck and superstructure only are available.

26' GP Workboat Particulars

LOA 26' 7.93m
Beam 8'4" 2.54m
Hull Mid Depth 4' 1.22m
Draft 14" 0.35m
Maximum Headroom 5'7" 1.7m
Approx. Dry Weight 3970 lbs 1800 kg
Engine Up to 200hp outboard  

Hull Shape

V bottom single chine
Construction Methods Ply over frame
Major plywood requirements for hull 9 x 4mm sheets
6 x 6mm sheets
6 x 9mm sheets
35 x 12mm sheets
Guidance Use Estuary/offshore
Drawing/Design Package 5 x A1 drawings+ 7 x A4 instruction/spec sheets
Additions and alterations included with the plans  

 

26' GP WORKBOAT PLANS PRICE

UK/EU - STUDY PLAN £15.00/FULL PLANS £100 (incl. VAT)
USA/ELSEWHERE - STUDY PLAN £13.00/FULL PLANS £85 ($21/$136)


21' IJSSEL LAUNCH  
This launch has been designed for diesel propulsion (10-15 hp) but she can also take steam or electric propulsion. The layout drawn for her is a simple open thro’ plan with no obstructing bulkheads but she could be fitted out in a variety of ways—a saloon and/or canopy could be fitted.
Construction is Cedar strip plank and the plans give computer faired mould shapes—she could just as easily be built using the clinker/ply method too.
The hull has a full bodied wineglass shape and the forward sections are well flaired. She has the capacity to take up to 10 or more crew.

The above is an Ijssel 21 under construction by Pieter Brittijn
Left - the same example but set up with a semi traditional construction - frames and bilge stringer in place ready for planking, the moulds having been removed
......and planked.
 

21' Ijssel Particulars

LOA 21'6" 6.58m
Beam 6'6" 1.98m
Hull Mid Depth 2'11" 0.89m
Draft 2'4" 0.71m
Approx. Dry Weight 3300 lbs 1497 kg
Engine 10-15 hp inboard  

Hull Shape

Round bilge
Construction Methods Strip plank (moulds also given for clinker ply)
Major strip wood requirements for hull 2460' of 3/4" x 1 1/4" (750m of 18x30mm) WRC
Guidance Use Estuary/coastal
Drawing/Design Package 8 x A1 drawings + 4 x A4 instruction/spec sheets
Additions and alterations included with the plans Moulds for clinker ply version

 

21' IJSSEL LAUNCH PLANS PRICE

UK/EU - STUDY PLAN £20.00/FULL PLANS £265 (incl. VAT)
USA/ELSEWHERE - STUDY PLAN £17.00/FULL PLANS £226 ($27/$362)

 

LAMBAY ISLAND 22  
This is a 22' motor boat with a large cockpit area and comfortable accommodation with 2 large berths, w.c. compartment and galley with dining space. The drawings are originally for steel construction but she could be made out of plywood over a simple framework of plywood bulkheads and girders. She may take inboard engines up to 50 hp. LOD 22' (6.71m); Beam 8'3" (2.52m); Draft 2'7" (0.78m); Approx. wht. 5182 lbs. (2350 kg). Steel hull construction details only are available at present.
Below is an example by Dennis Nissan - she has been increased slightly in size by multiplying all the panel and frame shapes by a scaling factor.

Lambay Island 22 Particulars

LOA 22' 6.71m
Beam 8'3" 2.52m
Hull Mid Depth 4'1" 1.25m
Draft 2'7" 0.78m
Maximum Headroom (wheelhouse) 6'5" 1.95m
Approx. Dry Weight 5182 lbs 2350 kg
Engine Up to 50 hp inboard  

Hull Shape

V bottom single chine
Construction Methods Steel (plywood could also be used)
Major plywood requirements for hull 18 sheets
Guidance Use Estuary/coastal
Drawing/Design Package 7 x A1 drawings + 7 x A4 instruction/spec sheets
Additions and alterations included with the plans  

 

LAMBAY ISLAND 22 PLANS PRICE

UK/EU - STUDY PLAN £15.00/FULL PLANS £85 (incl. VAT)
USA/ELSEWHERE - STUDY PLAN £13.00/FULL PLANS £72 ($21/$115)

 

NEW POWER 225 MOTOR CRUISER
The Power 225 is based upon the ‘U’ shaped hull section of our Power series of motor boats. At present we have the hull panel, frame shapes and construction details for an aluminium version of this boat—accommodation and fit-out details are not available bar a simple arrangement sketch but we can either draw up details or give details from our Power 3 which will act as a good guide. She is designed for inboard/outboard power and could easily be built from plywood.

She has been designed to have a large cockpit with open wheelhouse and forward accommodation of 2 berths/settees, wc and galley.

LOA 22’ (6.71m); Beam 9’4” (2.85m); Displ. To WL 6615 lbs (3000 kg); Engines up to 150 hp.

Power 225 Particulars

LOA 22' 6.71m
Beam 9'4" 2.85m
Hull Mid Depth 4'5" 1.35m
Draft 1'4" 0.4m
Maximum Headroom 5'9" 1.75m
Displacement 6615 lbs 3000 kg
Engine Up to 150 hp  

Hull Shape

Multi-chine 3 planks per side
Construction Methods Aluminium (ply could also be used)
Major plywood requirements for hull  
Guidance Use Offshore
Drawing/Design Package 4 x A1 drawings
Additions and alterations included with the plans  

 

POWER 225 CONSTRUCTION PLANS COST 

UK/EU - FULL PLAN £175 (incl. VAT)            

USA/ELSEWHERE - FULL PLAN £149 ($238)


 

MYLOR 27' STRIP PLANKED FISHING BOAT
A 27’ Fishing Boat for Mr. J. Clarke - this is a high volume strip planked fishing boat of modern proportions - the drawings are for the hull construction only - the mould shapes are computer faired and her tough hull uses 2 layers of strip plank which can then be sheathed in glass or veneered. Arrangements are shown for the engine and sterngear and internal framing consists of ply bulkheads. LOA 27' (8.24m); Beam 10'3" (3.1m); Displacement to DWL is 8 tons (8.13 tonnes). The skeg arrangement allows her to swing a 33" (0.84m) large prop.

Mylor 27' Particulars

LOA 27' 8.24m
Beam 10'3" 3.1m
Hull Mid Depth 6'7" 2m
Draft 4'6" 1.37m
Displacement 8 tons 8.13 tonnes
Engine 50-125 hp inboard  

Hull Shape

Round bilge
Construction Methods Strip plank
Guidance Use Offshore
Drawing/Design Package 4 x A1 drawings + 3 x A4 instruction/spec sheets
Additions and alterations included with the plans  

 

MYLOR 27 PLANS COST 

UK/EU - FULL PLAN £200 (incl. VAT)            

USA/ELSEWHERE - FULL PLAN £170 ($272)


NEW  30' IJSSEL LAUNCH

An American client wanted to produce a replica of the African Queen and saw our Ijssel launch as offering a craft of similar style—so we increased her length to 30’ and beam to 8’ (later we were asked to increase the beam still further to 10’ and this alteration is included with the plans. The layout is for a simple open arrangement and this may be altered to suit and she could certainly take a saloon/cabin.

Like her smaller sister, she has well flared forward sections with a full midships section leading into a pretty wineglass transom. The computer faired mould sections and details are given for Cedar Strip construction but the plans include construction details for steel as well.

LOA 30’ (9.15m); Beam 8’ and 10’ (2.44 and 3.05m).

30' Ijssel Particulars

LOA 30' 9.15m
Beam 8' and 10' 2.44m and 3.05m
Hull Mid Depth 3'10" 1.16m
Draft 3'1" 0.93m
Approx. Dry Weight 3.44 and 4.33 tons 3.5 and 4.4 tonnes
Engine 35-50 hp inboard  

Hull Shape

Round bilge
Construction Methods Steel (10' beam) and strip plank
Major plywood requirements for hull 2740' of 1" x 1 3/4" (835m of 25x45mm) WRC
Guidance Use Estuary/Coastal
Drawing/Design Package 10 x A1 drawings + 6 x A4 instruction/spec sheets
Additions and alterations included with the plans  

 

30' IJSSEL LAUNCH  PLANS PRICE

UK/EU - STUDY PLAN £30.00/FULL PLANS £300 (incl. VAT)
USA/ELSEWHERE - STUDY PLAN £26.00/FULL PLANS £255 ($42/$408)

NEW  23' PLY CANAL CRUISER

This is a simple ply cruiser designed specifically for canal use on the UK’s narrow canals. She uses simple ply on frame construction and she has parallel sections aft which mean that she can lengthened or shortened easily.

The drawings are for the construction of the hull and superstructure only and we have a drawing showing two possible options as to how she may be fitted out. There is space for 2 single berths a dinette that can convert into a double, separate wc and galley.

LOA 2211” (6.99m); Hull beam 6’10” (2.08m); Draft around 8” (0.20m); Displ. To WL 4630lbs. (2100kg); Trailing weight around 3000lbs (1361kg) depending on fit-out.

23' Ply Canal Cruiser Particulars

LOA 22'11" 6.99m
Beam 6'10" 2.08m
Hull Mid Depth 4' 1.2m
Draft 8" 0.2m
Maximum Headroom 6'5" 1.96m
Approx. Dry Weight 3000 lbs 1361 kg
Engine 5-10 hp outboard  

Hull Shape

Flat bottom plus 2 planks per side
Construction Methods Ply over frame
Major plywood requirements for hull 8 x 4mm sheets
14 x 9mm sheets
24 x 12mm sheets
4 x 15mm sheets
3 x 24mm sheets
Guidance Use Canal
Drawing/Design Package 6 x A1 drawings + 5 x A4 instruction/spec sheets
Additions and alterations included with the plans  

 

23' CANAL CRUISER PLANS PRICE

UK/EU - STUDY PLAN £15.00/FULL PLANS £125 (incl. VAT)
USA/ELSEWHERE - STUDY PLAN £13.00/FULL PLANS £106 ($21/$170)

 

NEW  22' RUFUS MOTOR CRUISER

The standard 17’ Rufus plans include the frame and panel shapes for both a 20’ and a fantailed stern version but we have been getting many requests for a slightly longer version and so we jumped at the chance to draw up a completely new set of plans when asked to lengthen the standard design.

The 22 footer has the same rugged displacement hull type as the smaller version with the exception that an additional chine has been added. The construction is basically ply panel over a ply eggbox type framework but details are also given for stitch and tape and the combi-stringer methods.

She may be powered by an outboard in a well but the drawings are based on a 20 hp inboard unit and the standard arrangement is for V berths forward with space for a wc and with a galley in the wheelhouse and an aft cockpit. However, like the 17’ version, she could be fitted out in a number of different ways with layouts to suit individual requirements.

LOD 22’ (6.71m); Beam 8’1” (2.46m); Draft 2’ (0.61m); Displ. To WL 3947lbs (1790kg); Approx. weight 2756 lbs. (1250kg).  

22' Rufus Particulars

LOA 22' 6.71m
Beam 8'1" 2.46m
Hull Mid Depth 3'7" 1.1m
Draft 2' 0.61m
Maximum Headroom (cabin)
(wheelhouse)
4'5"
6'
1.34m
1.84m
Approx. Dry Weight 2756 lbs 1250 kg
Engine 20 hp inboard  

Hull Shape

U shaped multi-chine - narrow flat bottom plus 4 planks per side
Construction Methods Ply over frame
Major plywood requirements for hull For hull :-
12 x 6mm sheets
6 x 9mm sheets
14 x 12mm sheets
For deck/superstructure :-
9 x 4mm sheets
3 x 9mm sheets
6 x 12mm sheets
Guidance Use Coastal
Drawing/Design Package 8 x A1 drawings + 7 x A4 instruction/spec sheets
Additions and alterations included with the plans  

 

22' RUFUS PLANS PRICE

UK/EU - STUDY PLAN £20.00/FULL PLANS £225 (incl. VAT)

USA/ELSEWHERE - STUDY PLAN £17.00/FULL PLANS £191 ($27/$306)


NEW  26' IJSSEL LAUNCH

Marlow 27

It had to happen of course—having designed  21’ and 30 Ijssel launches, someone would want something in between and here it is. The hull is very much of the Ijssel high volume stable model with plenty of space for whatever internal arrangement you need at this length. In this set of drawings though, the client asked for a simple forward cabin. This gives convenient shelter to sit and lie in or to arrange a small wc. The cabin could easily be extended and could of course be used on the 21’ and 30 Ijssels.

Like her sisters, construction is for Cedar strip plank and whilst the drawings give details for diesel machinery installation, she could take steam or electric.

LOD 25’10” (7.87m); Beam 8’ (2.43m); Draft 2’ 7 1/2” (0.80m); Displ. To WL 6615lbs (3000kg); Approx. weight 3750 lbs. (1700kg).  

NOTE - Also see the Golden Bay Launches in our Steam Section.

26' Ijssel Particulars

LOA 25'10" 7.87m
Beam 8' 2.43m
Hull Mid Depth 3'6" 1.07m
Draft 2' 7 1/2" 0.8m
Maximum Headroom 5'5" 1.65m
Approx. Dry Weight 3750 lbs 1700 kg
Engine 25-35 hp inboard  

Hull Shape

Round bilge
Construction Methods Strip plank
Major strip wood requirements for hull 3280' of 7/8" x 1 1/4" (1000m of 22 x 33mm) WRC
Guidance Use Coastal
Drawing/Design Package 8 x A1 drawings + 5 x A4 instruction/spec sheets
Additions and alterations included with the plans  

 

26' IJSSEL LAUNCH PLANS COST

UK/EU - STUDY PLAN £20.00/FULL PLANS £285 (incl. VAT)
USA/ELSEWHERE - STUDY PLAN £17.00/FULL PLANS £243 ($27/$389)

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POSTAGE & PACKING (SHIPPING)
Please note - the plan prices do not include P&P charges which will be added to your order.

The maximum P&P charges for plans are :-
UK - £2 per plan (sent by 1st class Business Post.
Europe - £3 per plan (sent by Airmail).
USA & Elsewhere - £6 ($10) per plan (sent by Airmail).

See the Postage Charge Table (via the Home Page) for further details.