Building “classic” Ilur Sail and oar dinghy 4.44 m long Clinker and strip planking versions Customer name: Plan number: ILR - © François Vivier – January 2016 François Vivier Architecte Naval – SARL au capital de 8 000 € - Siren : 451 456 669 RCS Saint Nazaire 7, avenue des Courtils, 44380 Pornichet - FRANCE tel : 33 (0)6 74 54 18 60 or 33 (0)2 28 54 97 86 - e-mail: [email protected] – www.vivierboats.com January 2016 Building classic Ilur Page 2/22 1. List of documents Important: since March 2011, there is 2 different plan packages for Ilur: • The “classic” Ilur which allows to build Ilur either with a clinker or strip planked hull, with or without the help of full size polyester full size patterns. • The new “clinker–kit” Ilur which, as the title says, is clinker built from a plywood cut kit marketed by several boat-builders partners. This new version has plywood transverse bulkheads instead of traditional steam bent or lamin- ated frames. The interest of this version is to be easier to build and to allow a 25% saving in working time. 1.1. The present manual 1.2. Appendices Numb Rev Title Date Pages 1 8 Timber list 27 May 2014 4 2 6 Plywood panels list 11 December 2012 8 3 3 Plywood panels list (strip planking version) 30 August 2007 3 4 4 Fittings list 27 May 2014 4 1.3. “Wooden boatbuilding” sheets (mainly in French) These documents are extracts from my book on wooden boat construction, “Construction bois les techniques mod- ernes” (in French). Though only a few are presently translated, equivalent information in English is available from other sources. For example, the websites of epoxy suppliers give comprehensive information in regard to saturation, gluing, filleting, and sheathing. Numb Rev Title Date Pages 05 0 Imprégnation époxy 25 sept. 03 2 06 0 Collages et joints congés 14 octobre 03 2 07 0 Stratification sur bois 15 novembre 03 4 08 0 Imprégnation et collage : solutions par temps froid 12 novembre 03 3 12 1 Rivets à bateaux 15 novembre 03 2 15 1 Scarfs des panneaux de contreplaqué 9 novembre 03 2 16 0 Pièces en lamellé-collé 30 décembre 03 4 22 0 Montage de la structure sur chantier 8 avril 04 8 31 1 Bordé en petites lattes 19 juin 04 5 41 0 Brochetage d’un bordé 30 décembre 03 3 43 0 Tenue provisoire des clins 6 novembre 03 1 44 2 Lapstrake fitting 4 December 2006 3 62 0 Membrures ployées à la vapeur 28 janvier 03 4 63 2 Membrures lamellées-collées in-situ 28 octobre 05 4 71 0 Bancs et planchers 7 octobre 03 1 72 0 Gouvernail à safran relevable 17 octobre 03 1 81 0 Mâts et espars ronds 17 octobre 03 3 82 0 Le gréement au tiers ou de misainier 10 octobre 03 3 91 0 Peintures et vernis 18 novembre 03 3 This document is the property of François Vivier Architecte Naval. It shall not be copied, transmitted to any other person, nor published as a whole or partly, without the written consent of the architect. January 2016 Building classic Ilur Page 3/22 1.4. Plans (A3 format booklet) Numb Rev Title Scale Date 01 0 Lines plan (outside planking) clinker version 1/12 1 Dec 2003 02 0 Lines plan (outside planking) strip version 1/12 13 Dec 2003 03 1 Stations dimensions, clinker version 1/10 29 Jan 2016 04 3 Transom and stem, clinker version 1/10 29 Jan 2016 05 0 Stations dimensions, strip planking version 1/10 23 Jan 2004 06 1 Transom and stem, strip planking version 1/10 18 Feb 2004 07 0 Sheer-strake dimensions, strip planking version 1/15 7 Mar 2004 11 2 General arrangement plan 1/15 19 Jun 2013 12 3 Building frame 1/15 21 June 2006 21 2 Backbone structure various 27 Jan 2013 22 3 Aft structure 1/10 30 Jun 2006 23 4 Fore structure (misainier or standing lug version) 1/10 8 Sept 2008 24 5 Fore structure (sloop version) 1/10 28 Jan 2016 25 1 Centreboard and centreboard case 1/10 28 Oct 2005 26 1 Rudder 1/10 19 May 2008 27 0 Rudder blade outline 1/2 9 January 2016 28 0 Rudder outline 1/2 9 January 2016 31 1 Sail plan "misainier" rig or standing lug 1/30 28 Oct 2005 32 2 Lug sail sloop rig 1/30 14 Oct 2012 33 1 Sloop rig converted into balance lug 1/30 14 Oct 2012 34 0 Sail mark 1/1 30 Jan 2004 35 2 Mast and spars (misainier or sloop rig) 1/20 14 Oct 2012 36 0 3 meters rowing oars 1/10 31 Jan 2004 37 0 2.9 m sculling oar 1/10 30 Oct 2005 41 0 Balanced lug rig 1/30 28 Oct 2005 43 1 Sail plan lug yawl rig 1/30 21 Apr 2014 44 1 Aft arrangement for yawl rig 1/10 21 Apr 2014 51 1 Bowsprit iron 1/1 14 Oct 2012 This document is the property of François Vivier Architecte Naval. It shall not be copied, transmitted to any other person, nor published as a whole or partly, without the written consent of the architect. January 2016 Building classic Ilur Page 4/22 2. Main characteristics 2.1. Dimensions Hull length 4.44 m Waterline length 4.10 m Breadth 1.70 m Depth 0.68 m Draught (centreboard up) 0.25 m Draught (centreboard down) 0.86 m ISO Light weight (clinker) 300 kg ISO Light weight (strip planking) 340 kg Sail area standing lug 12.2 m² Sail area lug yawl 12.4 m² Sail area sloop 14 m² Note: the ISO light weight includes the full rig (standing lug option), anchoring line and basic mooring equip- ment. This weight may vary according to plywood and timber choice. Thus, it is recommended to weight the boat prior ordering the trailer. Add 11 kg for the sloop version. It is possible to save 10 kg with a reduced thickness of floorboards (see ap- pendix 1). 2.2. Boat presentation Ilur was designed after Aber, in order to get a larger boat, able to family day sailing. It can be used for fishing and even coastal cruising. Two Ilur have been to Ile of Sein, at the extreme West of France, one of the worst place to go with tremendous tides and sea conditions. However, do not consider this as an invitation to go there ! Length was increased by 20 cm only, but Ilur is mostly wider and higher, with a generous freeboard. This makes a very different boat, with good seakeeping ability, but still in the sail and oar spirit. Its superior quality makes Ilur my best-seller plan (with nearly thousand copies sold). It has been built in many places, from the very heart of Alps, to Pacific islands! If you have to choose the best boat for your intended use, just notice than Ilur is not as an easygoing rowing boat compared to others of my sail and oar designs. She is mainly intended for sail, oars being used when wind is falling or to reach some narrow inlets. The dagger-board was initially preferred in order to give room for crew. It is now replaced by a pivoting centre- board and a low centreboard case which is not at all cumbersome. Many other improvements are continuously brought. As an example oars may be stowed under floorboard, leaving a free cockpit when sailing. Ilur was designed at first with the simple lug sail in the Breton style (said “misainier” rig). A lug sloop rig is now proposed and is a valuable option. A balanced lug rig (lug sail with boom) is an other option, interesting for river or single-handed sailing. Construction is either strip planked or plywood clinker. In both cases, laminated or steam bent frames give a very traditional and beautiful looking. This document is the property of François Vivier Architecte Naval. It shall not be copied, transmitted to any other person, nor published as a whole or partly, without the written consent of the architect. January 2016 Building classic Ilur Page 5/22 2.3. Compliance to regulations WARNING Ilur is a boat that may capsize. Thus it is important: to be equipped in order to withstand immersion into water, to be prepared to right the boat, to be always vigilant, to carry the sail appropriate with the wind and the sea state, particularly if no external assistance can be brought Ilur is designed in compliance with the requirements of the European Recreative Craft Directive 1994/25/CE amended 2003/44/CE. It is designed to sail in the following categories: ✔ In category C, with a maximum of 3 persons on board (maximum loading 275 kg) ✔ In category D, with a maximum of 5 persons on board (maximum loading 425 kg) The minimum crew is one person, as the boat may be right up by one person only in calm sea conditions. It is recommended to be at least two on board when sailing in poor wind and sea conditions or away from any pos- sible assistance. Attention : it is recommended to keep on board a piece of cloth to be inserted into centreboard case in order to avoid water entry after capsize and ease bailing out. Ilur may receive a motor of maximum power 4.4 kW / 6 hp (long of short shaft). A 2 to 3 hp motor is preferable, being lighter and easier to handle.