R383 & 393

R383 R393LOA. 11.49m 37'8" 11.74m 38'6" LWL 9.22m 30'3" 9.55m 31'4" Beam 3.51m 11’6" 3.51m 11'6" Draught 1.3m or 1.52m 4'3"or 5'0"Displacement 6 tonnes 6 tons 6 tonnes 6 tons Ballast 1475kg 3250lbs 1475kg 3250lbs All plus keel box fabrication w’tSailArea 59.5 sq m 640sq.ft 54.84 sq m 590sq.ftHeadroom 1.85m 6'1" 1.85m 6'1"

The original Ryton or R38 has taken on many guises since first designed. These include cutter, yawl, ketch and fisherman staysail and staysail schooners. Her appearances have also changed to suit the style of rig. A significant number have completed many extended voyages. Voyages known to the designers include at least one circumnavigation, several Atlantic and other ocean crossings, Arctic Circle wanderings etc.. The list could go on. Both boats feature a strip chine hull with moderate length keel (or twin asymmetric Bilge Keels (R383B) full depth skeg hung rudder, set under a centre cockpit, deck arrangement. The 383 features a tumble-home strake all through, "Dutch Style"; whereas the 393 twists the strake to produce greater flare and overhang at the bow. Both designs feature similar accommodation below deck including a passageway between fore and aft accommodation. Definitely sailing boats, where all running gear can be lead back to the cockpit. A proper wheel shelter is designed to give protection from wind, rain or even sun depending upon your requirement. The R383/393 series remains one of the most popular designs for amateur builders. Recommended Engine size 30 -40hp.

R 383 sail plan and general arrangement.

STEEL MATERIALS LIST MEMBER SCANTLlNGS LENGTH/SIZEKee1 base 10mm 2mxlm l plate Keel sides/floors 5mm 3mx1m 3 p1ateBottom shell 4mm 3mxlm 7 plate Chine strake 6mm l00 mm (l50mm) 4 bars stripSide shell 4mm 2.5xl.25 10 plateTumblehome strake 4mm 2.5x1.25 4 plateTransom 4mm 2,5xl.25 1 plateDecks/superstructure 3mm 3x3,5/2,5x1.25 5/3 plateCockpit/coamings 3mm 2,5xl.25 3 platePlate bilge keels 10mm 2.5xl.25 l plate

Bulkheads 3mm 3x1.5 3 p1ateFrames/beams 5mm 32x32 35 bars tee/angleStem tube 6mm wall 50mm dia 7m run of tubeRudder tube 5mm wall 72mm o.d lm run of tubeRudder stock 60 mm dia 3m bar 316 stainless steel)Building frames 75x75x6 26 bars angle

NOTES: Plate specification to be BS4360 43A or better or equivalent. A bar is assumed to have an average 6m length. Some allowance for wastage of section is included. Tee bar is recommended for beams as it does not twist when bent. Angle can be used for framing and stiffening. The above materials list represents the majority of steel items for theR 383/393 but is not exhaustive. Plate sizes shown represent the most economic but can be adjusted to suit availability. A building frame size (75x75x6mm) is a minimum suggestion and is generally required in the forward third of boat length owing to the stresses involved in twisting the forward bottom panels and the resultant curvature induced. Building frames assume the R 383/393 hull to be built inverted and some jig base structure may be needed. Building upside down allows gravity to assist in placing and keeping plates in place and reduces overhead welding.

Tucker Designs supply’s a small book/manual on the general construction methods for hard chine or multi-chine steel boatbuilding as part of the plans set. This is not a full treatise on steel boatbuilding, but sets out the basic requirements and methods of construction to be adopted.

It is the Policy of this Company not to supply full-size frame patterns as they tend to be inaccurate, owing to changes induced by fluctuations of temperature and humidity. Lofting details are given in the basic manual.

Bare shells to complete vessels can be supplied from professional boatbuilders.

The complete computer generated cutting files are available. ASK FOR DETAILS.