CONTENTS DESIGN OVERVIEW & SPECS BASIC ELEMENTS OF GOOD DESIGNS

Transcription

1 STUDY PLANS

2 2 CONTENTS PAGE 4 PAGES 6/7 PAGE 8 PAGES PAGES PAGE 14 PAGE 15 PAGE 16 PAGE 18 PAGE 19 DESIGN OVERVIEW & SPECS PHOTO S SAIL PLAN LAYOUT CROSS SECTIONS CONSTRUCTION OVERVIEW MATERIAL LIST NOTES FROM THE DESIGNER BASIC ELEMENTS OF GOOD DESIGNS CONSTRUCTION PLANS HOW TO ORDER

3 3 Hello and thank you for showing interest in our Design. Schionning Designs is a family based Australian business, we are very passionate about our designs and continually strive to offer the best options to get you out there and make your dream a reality. Choosing the right design can be a real challenge, there are so many options and variations and purposes a boat needs to meet. We will help you to determine which design will best suit your lifestyle and purpose, also your budget. We have plenty of options! These Study plans contain a lot of information directed at the OWNER BUILDER, the aim being to show you how simple and achievable it really is and to help you determine whether you will be able to do it yourself. Be assured, hundreds of absolute novices have and are doing it so if you really want to build a boat, go for it, we will help you all the way. If you are NOT an owner builder and would like to buy one of our designs, we work closely with several excellent boat building yards in Australia and overseas. Using one of these builders to build a custom boat for you, rather than buying a molded production boat is very rewarding, you can get exactly what you want and you ll be surprised just how well priced this can be too. Later re sale value is high and the quality of a hand build composite boat, built by a recommended builder far out strips any production process in terms of strength, quality and lightness (therefore performance). We look forward to hearing from you once you ve studied the following pages. We have not included kit pricing due to the many variations and options so please or call us and we ll furnish these on request. Good luck with your research and project. Jeff, Lorraine, and Ben Schionning

4 4 DESIGN OVERVIEW The Cosmos 1750 was designed as a pure thoroughbred with long waterline length. Her Waterline length to Beam ratio of 13.3:1 and high bridge deck clearance of 1metre make her an excellent performance cruiser. The first 1750 was designed for Pierre and Sera Fortier of New Caledonia and was built there with the help of a local builder. Pierre and Sera wanted good performance but it was important that she was able to be sailed short handed. Pierre set up the controls on his boat, (also called Sera ) so that he can sail the boat alone, quite an accomplishment for a big boat, he single handed the boat from Brisbane to Noumea on one passage and often sails alone with his wife Sera. Pierre wrote: LOA BOA Draft Headroom/ Bridgedeck Headroom/ Hulls Mast Height Sail Area (Main +Headsail) Displacement Payload Motor Option Sailing Speed Cruise Sailing Speed Top Fuel Capacity Water Capacity Metres 9.41 Metres Metres 2.07 Metres 2.06 Metres 22 Metres 150 Square Metres 13,200 Kilograms 3000 Kilograms 2x 54 75hp Diesels 10+ Knots 20+ Knots 300 Litres 600 Litres She is a very good boat, safe and fast, very easy to be handled by only one old timer (I'm 63...). In January 2006, we sailed from Noumea to Brisbane with 3 crew in 3 days and 20 hours, 880 miles direct, under autopilot all the time, mostly in light wind. I sailed back in April, 2006, and I was alone on board. It took 4 days and 18 hours, mostly against the wind to Noumea. The Fortier s chose an unconventional layout for their boat; they wanted their main sleeping cabin up on the bridge deck along with the saloon and galley. This cabin is huge with a walk around bed and plenty of storage. A pre cut kit is available for this layout but we also offer a custom layout should anyone prefer a different setup. A very workable alternative is the same layout we use in our Waterline 1750 with 4 double cabins, two in each hull and each cabin can have their own en suite bathroom. Without a sleeping cabin taking up valuable bridgedeck room in this option, a large area is then available for a much more open, spacious saloon, galley and dinette. The generous areas and the overall width of the saloon and cockpit can be turned into sophisticated luxury, giving the boat a depth of quality rather than one packing in quantity. The saloon and cockpit are well integrated with all round visibility, the doors and windows between them open fully to create a lovely indoor/outdoor living area, perfect for cruising in tropical climates. With the wide beam, we have the luxury of a separate navigation station in the saloon. With modern electronics, this station is probably used as much for the office or homework than actual chart work. An inside joystick control for the autopilot would make this a good inside helm position. Handling is simple and efficient with all controls leading to the helm station for single handing. Pierre chose to keep his cockpit clear and ran his mainsheet track over the cabin roof with control lines running down to winches and clutches at his helm station. All headsail sheets are tracked

5 5 down to the cockpit winches or again, as Pierre has done, brought back to the helm position. The headsail is furling and the mainsail is a modern high aspect ratio radial head sail dropping into lazy jacks, Pierre chose to use a Leisurefurl furling mainsail system. The sail plan, with the Leisurefurl system, is perfect, and pushes the boat at a speed equivalent to the real wind speed up to 10 knots of breeze, from 50 till 140 off the wind he said. The rig is quite moderate but with the slim, light hulls, longer waterline length and good section shapes she has a very good power to weight ratio. With a Bruce No. of 1.44, she sails like a rocket. This very light, strong cat with her displacement being 12,500 kg in light trim and 13,200kg in normal cruising mode, has excellent payload capabilities while not reducing her speed potential. Her hull sections are slim, with semi circular shapes developing into a flat run aft. Buoyancy is well distributed to stop pitching and because of her slim proportions we ve opted for every advantage in weight saving throughout the construction with the use of DuFlex for bulkheads and Featherlight panels for the furniture. Below: SERA on the Marina The hulls are Durakore strip with epoxy cloth laminates. The use of some lighter more exotic options such as S glass cloth or carbon and Superlite Durakore will further enhance her payload and/or performance. Sera is fitted with twin 35hp Kubota diesel engines, marinized by Diecon in Brisbane and a pair of 19 Autostream feathering propellers. The two small engines push the boat easily at 9 Knots at 2,200 RPM, and I'm satisfied, but for the noise of these engines. I still intend to mount an electric propulsion system as soon as this system will prove its reliability Pierre said. Another option would be the Yanmar sail drives, either the 54hp or 75hp would suit her well, they are both 4 cylinder engines and have a weight difference of only 9kgs between them. Interestingly, Pierre installed an effective energy system and says We are very happy with the energy supply system, made with 10 solar panels of 100w each, plus an 800w wind generator. With my 24 V 700 AMP/H battery pack, we do not need any fossil energy when anchored for the house needs (fridge, freezer, dish washer, ice maker, Home cinema, etc...). Dinghy storage will be either on a targa bar, if you choose to fit one, or if you prefer an aft Below: SERA s spacious cockpit, perfect for relaxing!

6 6 duckboard and swimming platform, this could lower into the water under the dingy for loading and simply winch up when sailing. It s also a good place to bring in the mackerel as well. Davits are also an option. The Cosmos 1750 is a light fast cruising cat with extremely good performance. She is a pleasure to sail and windward performance is excellent. With her long hulls she s a real ocean going Greyhound, she has the safety and speed to be driven hard yet she retains the feel of a light easily handled smaller cat. Teagan II another Cosmos 1750 was built in Townsville and recently completed a cruise to the Kimberley s and back. Owner builder Lester built her to Queensland Survey and is very pleased with the boat. Lester custom fitted his interior to his own layout. The Cosmos 1750 is a true long legged ocean cruiser, created to safely and comfortably deal with anything Mother Nature can throw at her with an air of unparalleled beauty, style and grace.

7 7 Main cabin onboard SERA An airy saloon. A well designed helm station makes single handing a breeze

8 SAIL PLAN 8

9 Photos 9

10 LAYOUT 10

11 CROSS SECTIONS 11

12 12 CONSTRUCTION OVERVIEW The Cosmos cats are built using the strip planked method of construction. This is a very easy building method that produces a strong light composite multihull without requiring high skill levels or complex and expensive tools. The choice of materials is either Western Red Cedar planking or Durakore (Balsa Core) planks. Western Red Cedar is a little cheaper but is heavier than Durakore at 360kg cubic metre vs. Balsa core at 150kg. Durakore is an excellent product giving a very high strength to weight ratio and will produce a lighter boat allowing either a little more performance for club racing or a better payload for cruising. Hulls are built separately upside down on temporary building frames. These are made out of mm chipboard or plywood set up on a ladder type strong back set on a concrete floor, or on star pickets driven into the ground. The hulls are built from a deck to hull join on the outside, to the hull and bridge deck join on the inside. This includes the flared curve and one has to turn some of the frames around on the strong back to produce a left and right hull. We find this method of building easy as you have smaller sections to produce at a time, allowing each hull section to be stripped and glassed in a reasonably quick time frame, avoiding changes in climate which may affect the strip planking before it can be sealed with epoxy and glass. The individual pieces can be more easily turned over in your shed cutting out crane expenses and the risk of turning big fragile sections usually outside a shed because of limited height. forward beam etc. Then the bridge deck is installed. These sheets are all joined on the floor and then lifted and glued into position. This is like a giant square and checks your boat is square and straight. From this stage furniture and decks are added until your cat is completed. The Cosmos 1750 has a pre cut kit for most of the flat panel areas. Things like the bulkheads, cockpit, webs, soles and steps are pre cut making it simple and quick to build. For bulkheads we use DuFlex panels and we add uni directional cloth in places, this is very quick, simple and strong, also using manufactured DuFlex panels this ensures the correct resin to cloth ratios for optimum strength and lightness. The Cosmos 1750 has an optional interior pre cut furniture kit. The furniture is pre cut from Featherlight panels. These panels have a Phenolic resin impregnated paper honeycomb core. The pre cut Duflex and Honeycomb kits are supplied in the specified panels, with every piece pre cut and held in place in the 2400 x 1200 mm panel by small tags. The full size panels are scarfed ready to join and once glued and dry, the tags are cut to release the individual pieces. A set of plans is supplied for the pre cut furniture showing the assembly of each cabin. Shed size needs to be 2 3m wider than the boat, 4m longer and ideally, the height should be 2.5m plus the boat height. Remember, foam bows can be added later to reduce shed size. The hulls are faired while upside down then both shells aligned and levelled in their respective positions, bulkheads are now added plus

13 13 Curved composite forebeam bows not on yet. Hull right way up and coming together. Taking shape: note Duflex panels on flat sections Cabin top is strip planked and built separately, then attached later. Gallery Up option. Transom steps walk-throughs are more popular.

14 14 MATERIAL LIST Cosmos 1750 Durakore Planks 2400 x 300mm mm 88 25mm Duflex Balsa - 1 x 600gm Biax each side 2400x1200mm 31 13mm 13mm Includes 2 non Routed 9 16mm 16mm Includes 2 non Routed 39 19mm 19mm Includes 1 non Routed 26 25mm 25mm Includes 1 non Routed 51 Featherlite Interior H/Comb 1 x 600gm 16 mm 2400x1200mm 16mm Includes 2 non Routed West R105/206 Resin & Hardener litre West System Resin litre West System Hardener fast or slow Kinetix Laminating Resin & Hardener 3 192kg 246TX Laminating Resin 6 24 kg H160 Laminating Hardener Medium Powder Modifiers 24 20lt Microspheres (411) 10 20lt Microfibres (403) 3 170lt Microlight (410) Fibreglass Cloth (Colan Products) g Uni directional (45 kg roll) kg g Double Bias ( 47 kg roll) kg g Double Bias (50 kg roll) kg g Plain Weave 50 lm x 1000 mm Fibreglass Cut Strips (Colan Products) g D/bias 315 mm (12.00 kg tape) kg g D/bias 210 mm (8.00 kg tape) kg g D/bias 155 mm (6.00 kg tape) kg g D/bias 105 mm ( 4.00 kg tape) kg 2 200mm x 75 mm Clear Oregon (per L/M) WRC mm x 45mm F.S. (lm) 8 50mm x 100mm R.S. (lm) 6 60mm x 200mm R.S. (lm) Klegecell Foam 80 kg 2175 x 1220mm 2.65m2 / sheet 15 40mm sheet - per m2 pricing Plywood - Gaboon 2440 x 1220mm 3 6mm 1 Precutting & Scarfing Cosmos 1750 not furn 1 Precutting & Scarfing Cosmos 1750 Furn

15 15 NOTES FROM THE DESIGNER. The success of our designs I feel, stems from the practical commonsense approach of a boat builder, coupled with many years of live aboard experience and 50 60,000 sea miles in some of the worst conditions in the world. This experience makes one aware of the power of the sea and the need for a boat to be able to survive these conditions, protect her crew physically and psychologically as well as being a fast comfortable vehicle for all the good times. I am sure you will find our designs reflect our sailing and liveaboard experience and will give you the offshore confidence to sail safely anywhere in the world. Multihulls are beautiful, safe, cruising boats. We hope you find them as exciting as we do. This is definitely not the case, similar boat, similar price! Your choice should therefore be towards the boat that suits you best and offers you good backup and is a good investment. Secondly, we know a lot of people who could not afford their boat at the onset so don t be discouraged. Once you start building it is surprising how you focus your interest, spare time and money into your new project. With our new owner builders we suggest they start with the CHOOSING A DESIGN... Choosing a design can be difficult so we hope that this introduction helps clear the way a little. We ve taken particular care with the balance of construction methods in our designs, making them light and strong yet easy to build in small sections, most of which are manageable by a group of friends when they need turning over and moving. The blend of strip planking and light flat panels kept in single plane form, makes building easy and quick and produces a finished catamaran of classic good looks which will not date quickly, giving you very good investment security. One of the first steps in changing this dream into reality is figuring out whether you can afford the boat (or more likely, how much money you don t have!). Two realities here are, firstly, two similar sized boats with similar displacement, built of similar materials will cost the same to build overall. Designers estimates of materials are often inaccurate and sometimes minimized to lead one to believe their boat will be cheaper. smaller items which can be built in the garage, carport, (lounge?) etc. These initial items use very little material and money but use a lot of time, so at the early stages you can get a lot done while you wait for your old boat or car or house etc. to sell. These items are; dagger boards and cases, motor pod, forward beam and catwalk, cabin roof, rudders, dinghy etc. The experience and confidence gained building these bits speeds up the second stage of larger items and gets the whole project finished much sooner. WHAT MAKES A GOOD MULTIHULL? Cat design is not just a matter of two hulls floating a cabin above the water. Only in fairly recent years have the basic elements of design and an understanding of their effect on the use and performance of the finished boat been understood. The basic principles of good design should all be present in the boat you re considering building or buying. These will blend together to produce an excellent Multihull.

16 16 THE BASICS ELEMENTS OF A GOOD DESIGN: GOOD ENGINEERING is obviously essential. FLAT DECKS. The flatter deck lines have a number of advantages. Secure footing while reefing, anchoring etc. in rough conditions, life lines are at a sensible protective height instead of set down a level. A flat deck is great for socializing, sunbathing or as a kids playground. BUOYANCY. Buoyancy distribution is the placement of buoyancy in the hulls. Our designs have between 50 and 60 separate buoyancy tanks built into every shell so they Sailing ability is important. We feel that good performance in a sailing cat is a real safety feature. are almost unsinkable. Most old designs hobbyhorse a lot making them uncomfortable and inefficient. Modern designs have the buoyancy pushed towards the hull ends damping down the hobby horsing tendencies and giving a lot more safety downwind where the buoyant hulls stop nose diving. Coupled with a lot of reserve buoyancy high up and forward in the hulls, this adds an enormous amount of safety and gives you confidence off the wind. A soft V d entry, quickly picking up reserve buoyancy with lots of reserve higher up is and ideal combination. BRIDGEDECK CLEARANCE. High Bridgedeck Clearance is essential. A short cabin length with long hull overhangs is a good safety feature. Good clearance on a cruising cat is 600mm 800mm, a Performance cat 700mm 900mm and a Racing cat 800mm 1000mm. Chamfer panels add high reserve buoyancy and need less clearance than a similar cat without them. SAILING ABILITY AND PERFORMANCE. Power to weight ratios show how well a cat will sail in light conditions. As wind strength increases, one reefs the power to stay at safe acceptable speeds (this is different for different people). The Bruce Number is a commonly used value and very useful in comparing cats, displacement is not always reliable and will vary with load. A Bruce Number = 1 is very slow, is a good cruising value, reflects a very fast cat. Boats like the French 60 Tri s and Club Med are running to extremes like 2.3. A light and efficient cat can often sail out of trouble and outrun severe weather patterns, shorten passage times and avoid bad weather by getting there in the existing weather window. Most good designs will tack through 90 degrees at a speed of 8 10 knots while reaching at knots comfortably with Main and No. 1 in 15 knots of wind. Daggerboards are efficient and allow very shallow draft for beaching. With a strong reinforced bottom as per our designs, it s easy to run the cats up on any old beach. Should you want shallow keels to protect inboard motors, then a combination of shallow keels and fixed rudders are a good option, daggerboards would still be fitted as usual, giving the best of both worlds.

17 17 LOW DRAG. This is a good characteristic. Slim hulls reduce drag and are efficient. A good cruising cat would have a Waterline beam to length ratio of 11.5 to 12.5:1. A performance cruising cat 12.5 to 14:1 and a racing cat 14 to 20:1 It is important to note that ALL these elements must be present in a design to make any of them valid. For example, a design can be really good looking, have high bridge deck clearance, a powerful rig and sail plan and be built reasonably light and show a fair displacement, but then have an 8:1 Beam to Length ratio. She ll be a good looking, powerful boat but it will be impossible to go forward, except slowly! There is no reason why a good modern design does not have all of these features. If you find some of these lacking it is usually for the wrong reasons. A lot of cats have very little bridge deck clearance because the designer is concentrating on a low profile cat which looks good or being dictated by interior accommodation and ignoring the fact that the boat will pound badly at sea. This is not only noisy and uncomfortable but can well be the cause of structural problems. Our designs have been developed around these practical elements of good design then we accommodate personal comforts and lifestyle choices. Good luck with your research and project, don t hesitate to contact us should you need further information or a chat about our designs. Jeff Above: G Force 1400 NEED HELP SOURCING MATERIALS? We supply hundreds of builders and don t carry stock, the goods go directly from the manufacturer or distributor to you. SAVE MONEY AND HANDLING COSTS Call Lorraine at Schionning Designs today (02)

18 18 CONSTRUCTION PLANS WHAT YOU GET WITH PLAN PURCHASE: The Cosmos 1750 has a comprehensive set of CAD drawn plans showing construction detail. We have produced a CD ROM that shows the assembly and building techniques as well as loads of tips on the easiest way to do things with plenty of photographs for reference. It includes basic information such as what tools you require and product information and use, although it does not show this design, many of the techniques are the same. UNLIMITED BACK UP SERVICE: Our back up service is unlimited, we will be here to guide you through any problems throughout your entire project. and fax support is available during business hours Monday to Friday. AN EXAMPLE SHEET FROM COSMOS 1750 CONSTRUCTION PLANS PLANS INCLUDE: Full size, colour coded plots for bulkheads A3 Booklet of plans (see index this page) CD Rom building manual Backup support throughout your project COST OF PLANS: Cosmos 1750 plans cost AUD $18, Price valid until 31st Oct Includes GST in Australia. Includes shipping to any destination.

19 19 HOW TO ORDER HOW TO ORDER PLANS: We require a signed and ed or mailed PLAN ORDER FORM with every plan purchase. The Plan Purchase Order form explains our terms and conditions and plans will not be mailed until a signed order form is received. (See form included in study plans). PAYMENT: WE ACCEPT: Bank cheques or direct deposit into our bank account. Our account details are on the order form. Credit cards are not accepted for plan purchases. SHIPPING: Plans are sent by express mail within Australia and by courier to other countries at no extra charge to you. HOW TO ORDER PLANS: Complete the attached PLAN PURCHASE ORDER form and mail or fax it back to us on (02) Deposit payment to Schionning Design s Account, (details on order form). When payment and your order are received your construction plans will be assembled, checked and mailed within 7 10 days to your nominated address. MATERIAL ORDERS: Construction plans must be ordered before (or at the same time) as your materials. Contact Schionning Marine for a materials quote when you are ready to order them. We will invoice you for the materials, 50% of this invoice value is required upon order, deposit to the account as shown on the invoice. You will also be asked to complete a second order form for the materials and on this form you will nominate whether you would like us to insure the materials during transit (cost is 0.75% of the invoice value) and you ll need to provide us the delivery address. We will notify you of the lead time (date) once the order is logged into the manufacturing schedule and we will contact you again about two weeks before your materials are ready for dispatch. You will then need to deposit the balance of the materials value, including freight and insurance if you nominated to use our services, into our account. Once this is received, your materials will be shipped to you! ANY PROBLEMS, CONTACT US: +61 (02) info@schionningdesigns.com.au Building a boat is definitely a challenge but with good plans, our helpful friendly support and the modern materials available, it's never been easier. The investment of time and money is very worthwhile, offering a rich life experience, fun reward when you launch her and financially you can certainly stand to gain substantially. We look forward to hearing from you again and wish you the very best with your project. Milski family on launch day.