Motor Boats 16' to 20'

 

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Motor Boats up to 16'
Motor Boats 16' to 20'
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MOTOR BOAT DESIGNS & PLANS
FOR MOTOR BOATS 16' TO 20' IN LENGTH

 

Study Plans are available for 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 8 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 1.3 Power 2.2 19' Ceecan Rathlin 20 MY Jarvis 17 Rufus 17 Rufus 20 Ruby 19 Skellig 18
Work/Fishing Boat
Skellig 19
Steel Workboat

 

POWER 1.3  
The Power 1.3 is a development of the original Power 1 design. In this case, we were asked to produce a simply built hull with more capacity and suitable for offshore and estuary conditions. We have retained the flat bottom section which eases and quickens construction but increased both the beam and hull depth substantially. The drawings give details for welded aluminium construction but she could easily be made using the hull panel shapes given on the drawings, in plywood.
Water tight side bench seats are shown aft and a separate buoyancy compartment forward but fit out can be altered to suit and a cuddy or wheelhouse could be fitted. LOD 17'2" (5.23m); Beam 7'6" (2.28m); Construction weight in aluminum 595 lbs (270 kg).

Note - details are given for hull construction in ply/epoxy and the Power 1.2 cabin details are also sent in the design package as a guide for those wanting to fit a cuddy/cabin.

The drawings also now give the hull panel and frame shapes for a mark 2 version of the hull which has the same dimensions as the original hull but has an additional chine/hull panel each side for a softer riding hull. 

Power 1.3 Particulars

LOA 17'2" 5.23m
Beam 7'6" 2.28m
Hull Mid Depth 3' 0.92m
Draft 10" 0.25m
Approx. Dry Weight 595 lbs 270 kg
Engine Up to 100 hp  
Speed 25 knots with 20 hp  

Hull Shape

U - flat bottom with 2 additional planks per side
Construction Methods Aluminum (or stitch and tape ply)
Major plywood requirements for hull 14 x 9mm sheets
1 x 12mm sheets
Guidance Use 6 adults +
Drawing/Design Package 5 x A1 drawings + 8 x A4 instruction/spec sheets
Additions and alterations included with the plans  

 

POWER 1.3 FULL PLANS COST 

UK/EU/US/Elsewhere - FULL PLAN £100          

(Study Plan approx. 24 Euros/$27 USD; Full Plan approx. 120 Euros/$135 USD)

 
POWER 2.2

 

2 variations on the Power 2.2 by Matthew Clark —above, with higher cabin/wheelhouse which is ideal for river/estuary use—and below with lower wheelhouse for higher speed use where more stability is required going into tight corners. With a 100hp outboard 30 knots was achieved.
This craft is a widened and a more sophisticated version of our Power 2 design. The bottom panel has been slightly veed to give a softer ride and her depth has been increased. This along with her wider beam enables her to be fitted out with a more extensive cabin structure and with larger tanks etc. Construction starts by assembling the frames and the transom onto the ply girder (backbone). The builder may then attach chine stringers to the frames and fit the hull panels oversize (to be trimmed later) use the panel shapes given on the drawings and stitch their edges together along the chines, later to be finished with epoxy filleting.
The drawings show the full hull construction and details of a wheelhouse and forward cabin which may be altered to suit the builder's own requirements. Engines may be mounted aft or in a conventional drive position depending on how the boat is to be fitted out. Her hull shape has a parallel section aft which allows her to be lengthened or shortened as required. 7 sheets of 12mm and 12 sheets of 9mm ply are used in the construction of the basic hull.

Power 2.2 Particulars

LOA 20' 6.1m
Beam 7'8" 2.34m
Hull Mid Depth 3'4" 1m
Draft 12" 0.3m
Maximum Headroom 6'4" 1.93m
Approx. Dry Weight 1700 lbs 771 kg
Engine Outboards up to 150 hp  
Speed 30 knots with 100 hp  

Hull Shape

U shape with 3 planks per side and round bilge (for strip planking) - also V bottom single chine
Construction Methods Stitch and tape and strip plank
Major plywood requirements for hull 12 x 9mm sheets
7 x 12mm sheets
Guidance Use 6-8+ adults offshore
Drawing/Design Package 7 x A1 drawings + 11 x A4 instruction/spec sheets
Additions and alterations included with the plans Round bilge strip plank moulds and jig option
V bottom single chine option

 

POWER 2.2 PLANS PRICE

UK/EU/US/Elsewhere - STUDY PLAN £20.00/FULL PLANS £125

(Study Plan approx. 24 Euros/$27 USD; Full Plan approx. 150 Euros/$169 USD)

 
CEECAN 19  
CEECAN is a simple river cruiser for outboard power. Her hull may be stretched or shortened to suit and her superstructure and deck layout changed to you own requirements. The drawings give details for the hull and superstructure construction. She may be simply fitted out to your own requirements or we can draw up an internal arrangement for you. The hull has a simple 'V' bottom shape and construction is based upon ply sheets over a simple framework with the bow made up from 2 layers of ply. For most river and canal work a 5 to l0 hp outboard will suffice and she could be altered to take an inboard engine.

Note the drawings now have 2 additional sheets giving guidance fit-out details.

Ceecan 19 Particulars

LOA 19' 5.79m
Beam 6'10" 2.08m
Hull Mid Depth 3'7" 1.1m
Draft 12" 0.3m
Maximum Headroom 6'1" 1.85m
Approx. Dry Weight 3087 lbs 1400 kg
Engine 5-10 hp outboard  

Hull Shape

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

 

CEECAN 19 PLANS PRICE

UK/EU/US/Elsewhere - STUDY PLAN £20.00/FULL PLANS £100

(Study Plan approx. 24 Euros/$27 USD; Full Plan approx. 120 Euros/$135 USD)

 
RATHLIN 20 MY
Our Rathlin design is not the type of motor yacht that you would normally see these days as a new ‘‘modern’’ design. Most new craft of the motor type to come off the drawing board now, are of the large plastic ‘‘patio door’’ type with maximum space provided in the shortest length possible. I would not criticize these boats - for what they are and the market that they are aimed at, they do a good job - especially when trying to get the most for your money out of marina charges. Rathlin, on the other hand, goes in the opposite direction and for a 20’ motor yacht simply offers you the most basic of accommodation with a wc, small galley and 2 berth dinette and an open wheelhouse with a large aft cockpit. She is every bit traditional 1950’s in style and layout. With simple elegance she would transport you on estuary and coastal trips without fuss, and against today’s motor boats, she would stand out as an example of quality.
The drawings show full details for strip planked construction with computer faired mould shapes along with machinery and fit out details. She could also be made with ply/epoxy methods. LOA 20’4’’ (6.20m); LWL 18’4’’ (5.73m); Beam 7’4’’ (2.24m); Draft 2’4’’ (0.70m); Approx. Displ. 1600 kg (3528 lb); Engine 10-30 hp.

Additional drawings are now available to construct the Rathlin as a motor sailer. The drawings include details to alter the skeg to make it into a ballast keel and details of the spars, tabernacle etc.

Sail Area is 15.89 sq.m (171 sq.ft). and the ballast is 450 lbs (200 kg).

IMPORTANT NOTE—included now, with the standard drawings are the mould shapes for a larger version of the Rathlin hull—the hull depth is increased by 4” (0.10m) and the beam by 6” (0.15m) giving an overall beam of 7’10” (2.39m) and an increase in headroom of 6” (0.15m).

 
Above - a Rathlin under construction by Bob Grutzmacher.

Rathlin 20 MY Particulars

LOA 20'4" 6.2m
Beam 7'4" 2.24m
Hull Mid Depth 2'11" 0.88m
Draft 2'4" 0.7m
Maximum Headroom 5'10" (Wheelhouse)
4' (Cabin)
1.77m (Wheelhouse)
1.2m (Cabin)
Displacement 3528 lbs 1600 kg
Engine 10-30 hp inboard  

Hull Shape

Round bilge
Construction Methods Strip plank
Major strip wood requirements for hull 1970' of 3/4" x 1 1/4" (600m of 18x30mm) WRC
Guidance Use Estuary (coastal for mark 2 version)
Drawing/Design Package 11 x A1 drawings + 10 x A4 instruction/spec sheets
Additions and alterations included with the plans Details for deeper keel and sail plan for a motor sailer version.
Mould shapes/jig etc for a beam of 7'10" (2.39m) and an increase in hull depth of 4" (0.1m) giving 6" (0.15m) more headroom overall.

 

RATHLIN 20 PLANS PRICE

UK/EU/US/Elsewhere - STUDY PLAN £20.00/FULL PLANS £250

(Study Plan approx. 24 Euros/$27 USD; Full Plan approx. 300 Euros/$338 USD)

 

EXTRA FOR RATHLIN 20 MOTOR SAILER DETAILS 

UK/EU/US/Elsewhere - EXTRA PLAN £50          

(Extra Plan approx. 60 Euros/$68 USD)


 
JARVIS 17  
Jarvis 17
The Jarvis 17' motor launch has been drawn up for clinker/ply construction - a building jig is made which consists of chipboard mould shapes mounted on a strongback. Ribbands (stringers) are inserted into the moulds at each lap and these help in defining the shape of each plank. The ribbands can be left in the hull if 6mm ply is used for the planking or, be removed as part of the jig if 9mm ply planking is used. The launch has 2 berths in a cabin/cuddy and she has a large cockpit for fishing. Outboards up to 25-30 hp may be used for most purposes although she will take bigger.The bench seats in the cockpit have stowage lockers. LOD 16'11" (5.16m); Beam 6'7" (2.04m); Draft 1'3" (0.38m); Approx. wht 750 lbs (340 kg).

Jarvis 17 Particulars

LOA 16'11" 5.16m
Beam 6'7" 2.04m
Hull Mid Depth 2'10" 0.87m
Draft 1'3" 0.38m
Maximum Headroom 5'3" 1.6m
Approx. Dry Weight 750 lbs 340 kg
Engine 25'30 hp outboard  

Hull Shape

Round bilge
Construction Methods Clinker ply
Major plywood requirements for hull 4 x 6mm sheets
8 x 7 to 9mm sheets
8 x 9mm sheets
1 x 18mm sheets
Guidance Use Estuary/coastal
Drawing/Design Package 4 x A1 drawings + 5 x A4 instruction/spec sheets
Additions and alterations included with the plans  

 

JARVIS 17 PLANS PRICE

UK/EU/US/Elsewhere - STUDY PLAN £20.00/FULL PLANS £125

(Study Plan approx. 24 Euros/$27 USD; Full Plan approx. 150 Euros/$169 USD)

 

RUFUS 17
Rufus 17

Rufus 17

The RUFUS 17' motor boat is a simple rugged craft with jaunty good looks. She has 3 chines per side and plenty of freeboard and beam, giving her an excellent carrying capacity and very good stability. She can be made as a simple open launch, in which case she would make an excellent club boat, or she can have a wheelhouse/cabin. The standard wheelhouse has bench seating, stowage spaces and a forward central steering position. With this arrangement there is plenty of room in the aft cockpit for bench seating. The outboard is housed in a protective well and she could be fitted with an inboard engine.
Construction uses pre-shaped plywood hull panels and girder shapes which can either be stitched and taped together and the plywood frames inserted before finishing the chines in epoxy, or the ply frames and girders can be erected as a framework with square sectioned stringers at the chines and the hull panels then fitted. The 'V' gap between the side of the stringers and the adjacent hull panels can then be filled with thickened epoxy to form a very strong chine join. For those with limited building space and/or budgets, the hull may be built in four pre-fabricated sections for later assembly. She may be fitted out in a variety of different ways to suit the builders' own requirements. LOD 17' (5.18m); Beam 7'2" (2.218m); Average loaded draft 1' 4" (0.4m); Approx. wht 800lbs (363kg) depending on how she is fitted out.
 
Below, a beautiful example with an inboard engine by Frank Kert.  
  Above an example from Russia.

 

New - plans to make a model of the Rufus 17
There are now plans available for a scale model of the Rufus 17 design for electric power - go to www.makeamodelboat.com.

 

Rufus 17 Particulars

LOA 17' 5.18m
Beam 7'2" 2.22m
Hull Mid Depth 2'11" 0.9m
Draft 1'4" 0.4m
Maximum Headroom 6'2" 1.88m
Approx. Dry Weight 800 lbs 363 kg
Engine 7-20 hp outboard  

Hull Shape

U shaped multi-chine with 3 chines per side
Construction Methods Stitch and tape/ply over frame
Major plywood requirements for hull 22 x 9mm sheets for hull 
For deck/wheelhouse 4 x 4mm sheets and 7 x 9mm sheets
Guidance Use Estuary/coastal
Drawing/Design Package 5 x A1 drawings + 11 x A4 instruction/spec sheets
Additions and alterations included with the plans Fantail stern for 17' version.

 

RUFUS 17 PLANS PRICE

UK/EU/US/Elsewhere - STUDY PLAN £20.00/FULL PLANS £150

(Study Plan approx. 24 Euros/$27 USD; Full Plan approx. 180 Euros/$203 USD)

NEW RUFUS 20
 The RUFUS 17 plans have included the hull panel and frame shapes for a 20' x 8' version which were requested as a modification. I have now taken the 20' details and added a full set of plans for this version including hull construction details, deck and superstructure details and both inboard (with rudder) and outboard installation details.

 She can be built using stitch and tape or ply over frame methods - stringers can be conventional full laminated wood or the 'combi-stringer' type with a square section laminated stringer combined with epoxy filleting. She is a 'chunky' little work horse that may be fitted out as a fishing/workboat boat with the wheelhouse shown above (which accommodates 2 full length bunk/seats) and aft self-draining cockpit or, using your own configuration to give more or less internal accommodation space.

 
Above - a 20' version of the Rufus by Shaun Squyres - the 20' details are included with the standard plans for the Rufus.
For the construction of another 20' Rufus have a look at Richard Hulbert's web page at www.eibusiness.com/orca-hull.html and below.
Below is an example by Evgeniy Krysko in Sebastopol.  

Rufus 20 Particulars

LOA 20' 1" 6.13m
Beam 8'2" 2.46m
Hull Mid Depth 3'3" 1.00m
Draft - outboard 1'5" 0.43m
Draft - inboard 1'10 1/2" 0.57m
Maximum Headroom 6'5" 1.96m
Approx. Dry Weight 2867 lbs 1300 kg
Engine 15-45 hp  

Hull Shape

U shaped multi-chine with 3 chines per side
Construction Methods Stitch and tape/ply over frame
Major plywood requirements for hull 22 x 9mm sheets for hull 
For deck/wheelhouse 4 x 4mm sheets, 5 x 9mm sheets and 3 x 12mm sheets.
Guidance Use Estuary/coastal
Drawing/Design Package 7 x A1 drawings + 9 x A4 instruction/spec sheets
Additions and alterations included with the plans Inboard & outboard installations detailed.

 

RUFUS 20 PLANS PRICE

UK/EU/US/Elsewhere - STUDY PLAN £20.00/FULL PLANS £175

(Study Plan approx. 24 Euros/$27 USD; Full Plan approx. 210 Euros/$236 USD)

RUBY 19

The Ruby 19 is based on our Ruby 22 double chine plywood steam launch. In the case of the Ruby 19 a client wanted a shorter version of the 22 to be built in steel which meant widening and deepening her to take the steel weight. Having produced the steel work drawings we have decided to make a complete set of plans for both the steel and plywood version.
If she is built in plywood, she has a very high carrying capacity and would make a tough work launch. The plans show an open arrangement but there is no reason why she could not take a cabin with accommodation and/or a wheelhouse.
The plans show details for steel construction as well as ply over frame construction.

Ruby 19 Particulars

LOA 19' 5.80m
Beam 6'7" 2.04m
Hull Mid Depth 3'1" 0.93m
Draft 2'5" 0.73m
Approx. Dry Weight in plywood 2536 lbs 1150 kg
Engine 18-30 hp inboard  

Hull Shape

Double chine V bottom
Construction Methods Steel or ply over frame
Major plywood requirements for hull 6 x 6mm sheets
17 x 9mm sheets
2 x 12mm sheets
Guidance Use Estuary/coastal
Drawing/Design Package 10 x A1 drawings + 5 x A4 instruction/spec sheets
Additions and alterations included with the plans Steel and Plywood hull construction shown.

 

RUBY 19 PLANS PRICE

UK/EU/US/Elsewhere - STUDY PLAN £20.00/FULL PLANS £190

(Study Plan approx. 24 Euros/$27 USD; Full Plan approx. 228 Euros/$257 USD)

NEW SKELLIG 18

The Skellig 18 is based on our Skellig 26 workboat/fishing boat. She has a double chined V bottom shape with generous beam making her a very stable working platform for all kinds of duties. The hull, with it's high volume and weight carrying capacity would also make an excellent base for a pleasure boat outfit.

Although details are given for an inboard diesel installation, she could easily take an outboard on the transom or in a well. Construction is ply plank over frame with the frames, bow girder and transom set up on a strongback, chine and hog stringers added and bevelled before fitting the ply planking oversize and trimming back.

The cockpit height can be altered but as shown is self draining. There is plenty of stowage and locker space.

Skellig 18 Particulars

LOA 18' 1 1/2" 5.53m
Beam 7'2" 2.18m
Hull Mid Depth 3'2" 0.96m
Draft 2' 0.61m
Approx. Dry Weight in plywood 1985 lbs 900 kg
Engine 9-30 hp inboard  

Hull Shape

Double chine V bottom
Construction Methods Ply over frame
Major plywood requirements for hull 16 x 6mm sheets
6 x 9mm sheets
1 x 24mm sheets
Guidance Use Estuary/coastal
Drawing/Design Package 6 x A1 drawings + 5 x A4 instruction/spec sheets
Additions and alterations included with the plans  

 

SKELLIG 18 PLANS PRICE

UK/EU/US/Elsewhere - STUDY PLAN £20.00/FULL PLANS £175

(Study Plan approx. 24 Euros/$27 USD; Full Plan approx. 210 Euros/$236 USD)

NEW    SKELLIG 19

The Skellig 19 is based on our Skellig 18 workboat/fishing boat. In this case the client wanted a slightly bigger boat made of steel to be used as a strong and rugged work/fishing boat in Irish waters. 

The hull plating is 3mm over 4x75mm frames.

The drawings for the steel hull only are given but we do supply the fit-out details for the Skellig 18. The engine shown is a 37hp diesel.

Note the study plans consist of the main hull steel construction drawing and the layout for the Skellig 18.

Skellig 19 Particulars

LOA 19' 5.80m
Beam 8' 2.44m
Hull Mid Depth 4' 1.2m
Draft 2' 3" 0.68m
Approx. Dry Weight incl. engine and fit-out 3749 lbs 1700 kg
Engine 28-48 hp inboard  

Hull Shape

Double chine V bottom
Construction Methods Steel
Guidance Use Coastal/Channel
Drawing/Design Package 4 x A1 drawings + 54x A4 instruction/spec sheets
Additions and alterations included with the plans  

 

SKELLIG 19 PLANS PRICE

UK/EU/US/Elsewhere - STUDY PLAN £20.00/FULL PLANS £175

(Study Plan approx. 24 Euros/$27 USD; Full Plan approx. 210 Euros/$236 USD)

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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.
When ordering multiple items on-line we will always try to combine the packing and charge the lowest P&P cost option.
Go to Ordering Plans & Manuals for the Postage & Packing rates.