Prowler GTR 1040 Study Plans A4 - Schionning Designs

PRELIMINARYSTUDY PLANSFlybridge VersionStealth Version

2CONTENTSPAGE 4PAGES 6/7PAGES 8/9PAGES 10PAGE 11PAGE 12 - 14PAGE 15PAGE 16DESIGN OVERVIEW & SPECSLAYOUT PLAN / CROSS SECTIONCAD RENDERSCONSTRUCTION OVERVIEWMATERIAL LISTNOTES FROM THE DESIGNERCONSTRUCTION PLANSHOW TO ORDER

3Hello and thank you for showing interest in our Design.Schionning Designs is a family based Australian business, we are verypassionate about our designs and continually strive to offer the bestoptions to get you out there and make your dream a reality.Choosing the right design can be a real challenge, there are so manyoptions and variations and purposes a boat needs to meet. We will helpyou 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 “OWNERBUILDER”, the aim being to show you how simple and achievable itreally is and to help you determine whether you will be able to do ityourself. Be assured, hundreds of absolute novices have and are doingit so if you really want to build a boat, go for it, we will help you all theway.If you are NOT an owner builder and would like to buy one of ourdesigns, we work closely with several excellent boat building yards inAustralia and overseas. Using one of these builders to build a customboat for you, rather than buying a molded production boat is veryrewarding, you can get exactly what you want and you’ll be surprisedjust how well priced this can be too. Later re-sale value is high and thequality of a hand build composite boat, built by a recommended builderfar out strips any production process in terms of strength, quality andlightness (therefore performance).We look forward to hearing from you once you’ve studied the followingpages. We have not included kit pricing due to the many variations andoptions so please email or call us and we’ll furnish these on request.Good luck with your research and project.Jeff, Lorraine, and Ben Schionning

4DESIGN OVERVIEWThe Prowler GTR1040 looks quite like theGrowler VTR, both sharing the new‘Schionning’ sleek, stealth styling above waterbut the underwater shape is quite different.The Prowler GTR has a standardsemi‐displacement hull shape. This is a veryefficient hull that travels through the waterso doesn’t plane or achieve the very highspeeds of the Growler but she is howevermore economical for longer distance traveland she’ll cruise comfortably and efficientlyfrom 0‐22kts.LOABOADraftHeadroom/ BridgedeckHeadroom/ HullsDisplacementBuilding Time (Approx)Motor OptionMotor Speed—CruiseMotoring Speed—TopFuel CapacityWater Capacity10.40 Metres5.30 Metres0.650 Metres1.90 Metres1.90 Metres6,000 Kilograms4000—5000 hours2 x 75 ‐ 125HP Diesels12 ‐ 15 Knots20 ‐ 22 Knots1540 Litres400 LitresThe hull is rounded so construction usesstrip planking for the hull bottoms but therest of the boat is supplied in a flat panelpre‐cut kit for easy building by anyone. At10.40m long and with a beam of 5.30m thisdesign is a very capable cruiser. With twin125hp Yanmar diesel engines (50hp‐125hprecommended), she has a cruising range ofaround 1500 miles at 10kts.Accommodating seven people in threeseparate cabins (three queen beds and onesingle), she has a big bathroom aft in onehull with a separate toilet and shower area.One sleeping cabin has an en suite bathroomfor the ‘owners’ or you could have awalk in robe or another single berth insteadif preferred.If beds aren’t a priority, you could simplyhave two generous sleeping cabins, eachwith their own big bathroom aft in eachhull.Upstairs on the bridge‐deck you will find thesaloon and galley opening out to a very generouscockpit, this is where so much time onboard is spent. Big drop down, fully openingwindows integrate the inside with out, perfectfor long summer days and entertaining. Thesteering station is inside amidships with perfectvisibility forward. A helm seat anddashboard for instruments and navigationmake this a comfortable place from which tohandle the boat.A flybridge is an option and will accommodatea second or outside steering station, and createsanother place for relaxing outside, this isespecially nice if you tend to cruise with a bigfamily or friends. With the 360 degree visibility,you’ll enjoy the view from inside whetherin the galley, dining or relaxing.

CROSS SECTIONS & LONGITUDINAL SECTIONS6

LAYOUT PLAN7

FLYBRIDGE RENDERS8

10CONSTRUCTION1.PROWLER VT950 CONSTRUCTION SHOWN—DEMONSTRATION ONLY2.3.4.5.6.

MATERIAL LIST COMING SOON11

12NOTES FROM THEDESIGNER….The success of our designs I feel, stems fromthe practical commonsense approach of a boatbuilder, coupled with many years of live aboardexperience and 50 - 60,000 sea miles in someof the worst conditions in the world. Thisexperience makes one aware of the power ofthe sea and the need for a boat to be able tosurvive these conditions, protect her crewphysically and psychologically as well as beinga fast comfortable vehicle for all the goodtimes. I am sure you will find our designsreflect our sailing and live-aboard experienceand will give you the offshore confidence tocruise safely anywhere in the world. Multihullsare ‘beautiful, safe, cruising boats’. We hopeyou find them as exciting as we do.CHOOSING A DESIGN...Choosing a design can be difficult so we hopethat this introduction helps clear the way alittle. We’ve taken particular care with thebalance of construction methods in ourdesigns, making them light and strong yet easyto build in small sections, most of which aremanageable by a group of friends when theyneed turning over and moving. The blend ofstrip planking and light flat panels kept insingle plane form, makes building easy andquick and produces a finished catamaran ofclassic good looks which will not date quickly,giving you very good investment security.One of the first steps in changing this dreaminto reality is figuring out whether you canafford the boat (or more likely, how muchmoney you ‘don’t’ have!). Two realities hereare, firstly, two similar sized boats with similardisplacement, built of similar materials will costthe same to build overall. Designers’ estimatesof materials are often inaccurate and sometimesminimized to lead one to believe theirboat will be cheaper.This is definitely not the case, similar boat,similar price! Your choice should therefore betowards the boat that suits you best and offersyou good backup and is a good investment.Secondly, we know a lot of people who could notafford their boat at the onset so don’t bediscouraged. Once you start building it issurprising how you focus your interest, spare timeand money into your new project. With our newowner-builders we suggest they start with thesmaller items which can be built in the garage,carport, (lounge?) etc. These initial items use verylittle material and money but use a lot of time, soat the early stages you can get a lot done whileyou wait for your old boat or car or house etc. tosell. These items are; flybridge, targa bar, cabinroof, rudders, dinghy etc. The experience andconfidence gained building these bits speeds upthe second stage of larger items and gets thewhole project finished much sooner.WHAT MAKES A GOOD MULTIHULL?Cat design is not just a matter of two hulls floatinga cabin above the water. Only in fairly recentyears have the basic elements of design and anunderstanding of their effect on the use andperformance of the finished boat been understood.The basic principles of good design shouldall be present in the boat you’re considering buildingor buying. These will blend together to producean excellent Multihull.

13THE BASICS ELEMENTS OF A GOODDESIGN:• GOOD ENGINEERING is obviouslyessential.• FLAT DECKS. The flatter deck lines have anumber of advantages. Secure footingwhile on deck at any time in rough conditions,life lines are at a sensible protectiveheight instead of set down a level. A flatdeck is great for socializing, sunbathing oras a kids playground.• BUOYANCY. Buoyancy distribution is theplacement of buoyancy in the hulls. Ourdesigns have between 50 and“A power vessel that uses lessfuel and is capable of runningefficiently at higher speedssaves you money and time.”60 separate buoyancy tanks built intoevery shell so they are almost unsinkable.Most old designs hobbyhorse a lot makingthem uncomfortable and inefficient.Modern designs have the buoyancypushed towards the hull ends dampingdown the hobby-horsing tendencies andgiving a lot more safety downwind wherethe buoyant hulls stop nose-diving.Coupled with a lot of reserve buoyancyhigh up and forward in the hulls, thisadds an enormous amount of safety andgives you confidence off the wind.higher up is an ideal combination.• BRIDGEDECK CLEARANCE. HighBridgedeck Clearance is essential. A shortcabin length with long hull overhangs is agood safety feature. Good clearance on aplaning hull cat would be 600mm –800mm, or 1m—1.2m for a power catrunning displacement hulls. Chamfer panelsadd high reserve buoyancy and needless clearance than a similar cat withoutthem.• FUEL ECONOMY AND CRUISING RANGE.When discussing sailing designs we oftentalk about speed and performance as beinga real safety feature, and our powerdesigns are no different. Good power designsshould be capable of speed in allkinds of sea conditions safely, as severeweather can be outrun or avoided, andthere is no need to spend time waiting fora gap in the weather. Fuel economy isimportant for saving you money, andtime. Having a vessel that uses less fueland is capable of running efficiently athigher speeds means less time at sea,more time fishing or relaxing on thebeach and a smaller risk of bad weatherwhile on that ocean passage or weekendtrip. We feel a healthy fuel reserve isextremely important, and being able tocarry enough fuel to get you safely thereand back, and keep you going shouldsomething go wrong cannot be emphasizedenough.• A soft ‘V’d entry, quickly picking upreserve buoyancy with lots of reserve

14• LOW DRAG. This is a good characteristic.Slim hulls reduce drag and are efficient.A good cruising cat would have a Waterlinebeam to length ratio of 11.5 to 12.5:1. Aperformance cruising cat 12.5 to 14:1 and aracing cat 14 to 20:1 It is important to note thatALL these elements must be present in adesign to make any of them valid. For example,a design can be really good looking, have highbridge-deck clearance, a powerful rig and sailplan and be built reasonably light and show afair displacement, but then have an 8:1 Beamto Length ratio. She’ll be a good looking,powerful boat but it will be impossible to goforward, except slowly!Good luck with your research and project, don’thesitate to contact us should you need furtherinformation or a chat about our designs. JeffThere is no reason why a good modern designdoes not have all of these features. If you findsome of these lacking it is usually for the wrongreasons. A lot of cats have very little bridgedeckclearance because the designer isconcentrating on a low profile cat which looksgood or being dictated by interioraccommodation and ignoring the fact that theboat will pound badly at sea. This is not onlynoisy and uncomfortable but can well be thecause of structural problems.Our designs have been developed around thesepractical elements of good design then weaccommodate personal comforts and lifestylechoices.NEED HELP SOURCING MATERIALS?We supply hundreds of builders and don’t carry stock, the goodsgo directly from the manufacturer or distributor to you.SAVE MONEY AND HANDLING COSTSCall Lorraine at the office today (02) 49 97 91 92

15CONSTRUCTION PLANSWHAT YOU GET WITH PLAN PURCHASE:The Prowler VT950 has a comprehensive set of CADdrawn plans showing every inch of construction detail.Brett Schionning has produced a CD-ROM thatshows the assembly and building techniques as wellas loads of tips on the easiest way to do thingswith plenty of photographs for reference. It includesbasic information such as what tools you requireand product information and use. Plans are suitablefor Amateur construction.UNLIMITED BACK UP SERVICE:Our back-up service is unlimited, our professionalboat builder (Brett Schionning) will be here to guideyou through any problems throughout your entireproject. Email and phone support is available duringbusiness hours Monday to Friday.PLANS INCLUDE:• Full size, colour-coded plots for bulkheads• A3 Booklet of CAD Drawings• CD-Rom building manual• Backup support throughout your projectCOST OF PLANS:Prowler GTR1040 plans cost AUD $10.450.00.Price valid until 31st Oct 2012.Includes GST in AustraliaIncludes shipping to any destination.AN EXAMPLE SHEET FROM PROWLER VT950 CONSTRUCTION PLANS

16HOW TO ORDERHOW TO ORDER PLANS:We require a signed and faxed or mailedPLAN ORDER FORM with every plan purchase.The Plan Purchase Order form explains ourterms and conditions and plans will not bemailed until a signed order form is received.(See form included in study plans)PAYMENT:WE ACCEPT: Bank cheques or direct depositinto our bank account. Our account details areon the order form. Credit cards are not acceptedfor plan purchases.SHIPPING:Plans are sent by express mail within Australiaand by courier to other countries at no extracharge to you.HOW TO ORDER PLANS:• Complete the attached PLAN PURCHASEORDER form and mail or scan and email itback to us.• Deposit payment to Schionning Design’sAccount, (details on order form).• When payment and your order arereceived your construction plans will beassembled, checked and mailed within 7—10 days to your nominated address.KIT ORDERS:Construction plans must be ordered before (orat the same time) as your kit.• Contact Schionning Designs for a KITquote when you are ready to order yourkit.• We will invoice you for the kit, 50% of thisinvoice value is required upon order,deposit to the account as shown on theinvoice.• You will also be asked to complete asecond order form for the kit and on thisform you will nominate whether you wouldlike us to insure the kit during transit (costis 0.75% of the invoice value) and you’llneed to provide us the delivery address.• We will notify you of the lead time (date)once the order is logged into the manufacturingschedule and we will contact youagain about two weeks before your kit isready for dispatch.• You will then need to deposit the balanceof the kit value, including freight and insuranceif you nominated to use our services,into our account. Once this is received,the kit will be shipped to you.ANY PROBLEMS, CONTACT US:+61 (02) 49 97 91 92Building a boat is definitely a challengebut with good plans, our helpful friendlysupport and the modern materials available,it's never been easier. The investmentof time and money is very worthwhile,offering a rich life experience,fun reward when you launch her andfinancially you can certainly stand togain substantially. We look forward tohearing from you again and wish youthe very best with your project.Milski family on launch day.