MANUFACTURING DRAWINGS

STEEL NARROWBOAT HULL AND SUPERSTRUCTURE  -  30'  TO  70'  L.O.A.

The following data sheets give the full specification of the 2 designs available along with some illustrations of actual boats that have been built from the plans.  This design was established at the end of 1981, and since that time has been purchased by a wide range of individuals, companies, local authorities and others for home or amateur construction.  The design has also been used by professional boatbuilders, and is by now thoroughly tried and tested.

The drawings are on A3 sheets, 16" x 12", and include an overall arrangement, two larger scale arrangements for the bow and stem, and detail drawings for all other sections.  The drawings are dual dimensioned in imperial and metric units and provide for either traditional stem arrangement or cruiser style stem.  The design incorporates the requirements of the Boat Safety Scheme, and produces a highly professional looking boat with excellent "swimming" characteristics, producing very little wash.  The one set of plans enables all sizes of boats from 30' to 70' to be constructed.

If you have already decided to build your own hull and superstructure, these plans will provide you with all the detailed information you will need.  If you are still contemplating the idea of building your own boat, I believe these plans would represent "money well spent" in helping you plan your project.

 

STANDARD NARROWBOAT, TRAD OR CRUISER STERN

BASIC MATERIALS

Floor  8mm or 10mm  Plate at Customers discretion.

Sides                              6mm Plate

Superstructure               4mm Plate

Bulkheads                      4mm Plate

Floor Bearers                 60 x 60 x 6mm RSA

Knee & Stringers           60 x 60 x 6mm RSA

Hatch Rails                    40 x 40 x 5mm RSA

Door Frames                 30 x 30 x 5mm RSA

Roof stiffeners              25 x 25 x 2.6mm SHS

Rudder                           10mm Plate

Rudder Stock & Pintle   40mm diameter Bar

Skeg                              127 x 64mn x 14.9kg/m RSC

GENERAL DESCRIPTION

The following features are incorporated in the design.  

Integral water tank, approximately 150 galls. with access lid, take-off point and locking eye; self draining front well deck; heavy stem bar; front and rear mooring studs; fender eyes; twin bottle gas locker; keel cooling tank with connections; inbuilt diesel tank approx. 50 gall capacity with filler, vent, offtake and return connections; rudder, tiller and skeg; quick release weedhatch; engine bed; waste outlets from cabin (positioned to suit) and bilge and exhaust outlets at stern.

The superstructure includes front and rear doorways with a rear hatchway positioned to suit.

The hull floorplate is provided with about 20mm overlap beyond the sideplates to give a wearing edge and protect the floorplate/sideplate welded seam.

TRADITIONAL STYLE BOAT

The hull has an elliptical stern, with rising counter and rear deck, and has the normal enclosed engine room with rising roof line.

The rear doorway and hatch are 21" wide, opening into the engine room.  A bulkhead separates the engine room from the cabin and a doorway through is provided, offset to the starboard side.

A 24" wide doorway opens onto the front well deck.  The well deck floor is only 15" below the front gunwales, making it extremely easy to leave or step into the boat (a most useful feature if you have dogs or are not so nimble).

The area beneath the well deck is open and creates useful storage from inside the cabin.

The front well deck is 3' 6" long, the enclosed engine room is 4' 3" long and the rear deck is 3' 3" long.  The cabin length (accommodation area) is hull length minus 14' 8".

The cabin roof as originally drawn is designed for the fitment of traditional style timber handrails.  However, an additional detail is also included to show an integral steel handrail.  Although this is a more involved design and requires rather more work to produce, this type of construction is nowadays regarded as normal practice, and long term provides a far better build.

CRUISER STYLE BOAT

The bow section and front well deck is identical to the traditional style described above.

The stern section incorporates a self draining rear deck in place of the enclosed engine room.  The overall length of the rear deck is 7' 6".

Direct access to the cabin is by a sliding hatch and rear doorway, offset to the starboard side (can be to port or be central if preferred).

The diesel tank capacity is slightly reduced at approx 45 gallons.

Square tubular handrails are standard on Cruiser style cabins, and are set onto the roof 8" from the edge, and with 40mm clear between the roof and the underside of the rail.  This allows a safe grip to be made on the rail.  This style of rail can be used on a traditional style boat if preferred.  A heavy section stern rail is provided, with a steel control column on the port side for use with the Morse MT2 single lever controller or similar.

FINISH

The Hull incorporates 2" x 1/2' convex square edge rubbing strakes.

OPTIONAL EXTRAS

All basic steelwork is included in the design and the optional extras are not essential to complete a boat.  The optional extras shown in the designs are:

Stainless Steel Water Tank Liner.

Toilet Pump-out Tank and Connections

BOAT SAFETY SCHEME requirements (British Waterways, Manchester Ship Canal, Bridgewater Canal, Environment Agency and others)

This design (in respect of the steelwork) meets all the current standards required by British Waterways.  In particular, the height of openings in the hull sides, the provision of an oil tight tray beneath the engine, weedhatch opening at correct height above waterline, two means of escape from the cabin, provision of mooring bollards, correct arrangements for the fuel draw off, and gas bottle storage.  Customers intending to construct and fit out a boat should familiarise themselves with the Boat Safety Scheme requirements (the 'Boaters Guide' can be downloaded free from www.boatsafetyscheme.com) which are MANDATORY for ALL CRAFT on their waterways.  Note in particular that an amount of PERMANENTLY OPEN ventilation in the cabin is advised (but mandatory for houseboats and hireboats) in order to comply with the regulations.  As this invariably mean cutting holes in the steelwork to fit ventilation grilles or 'Mushroom' roof vents etc, you are strongly advised to plan these openings into your hull at an early stage rather than after you have completed your fit out.  A typical narrowboat with an LPG cooker, solid fuel or oil burning stove, will need to have about 40 SQUARE INCHES of such ventilation.

Customers are asked to note that the Proprietor, Mr.P.J.Hopley, is also a marine Surveyor authorised by the Boat Safety Scheme to inspect Craft and issue Boat Safety Certificates.

The company reserves the right to alter its specifications without notice as part of its policy of continually improving its products.

Click here to link to the Boat Safety Scheme 'Boaters Guide' Link to the Boat Safety Scheme Boaters Guide

 

TO BUY THESE PLANS, GO TO 'CATALOGUE' AND SELECT THE SECTION 'PLANS & DRAWINGS'. YOU WILL FIND PURCHASE DETAILS THEREIN.

                                       
                                                                                                                                    10NBH002002