DOCSLIB.ORG

Delta Class Biciig Yacht

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Delta Class Biciig Yacht strut is used to provide clearanc-e--~--'::;.:g pinnedstrutiSj be tween the back into mast jenny stay and roach stays rear edgel of the mainstrut. strut is 31/4" from mast mast is center to back raked back stay, note "0" . ; _ center of the mast is Illug- ged~ with waad--side stay thro hook to pick up headboard on . mainsail, 1/4"-0 screw i·i ~ fore stoy ~ \: stainless steel wire '. jib halyard " 1/2"0.d, jackline-- sail hooks hard wood top mast dural attach to this line. extends into 1/2" jib halyard and ·o.d. durol main the fore stay are ma It a bout 2". attached to the loop made by the o hook picks up jib headboard side stay sto through the i-'-A-_--:":(---J-_-14-,,0-, .., B- 2" K- 26" C- 2 1/2" L- 32" D- 3" M-37" E-33/4" N-40" F-41/2" - P-55" G-IO 3/4" 0-47" H-1I5/S" R-61" sail and mast dimen- L sions. sheets, halyards and note how the side stays attach to backstay-- irish linen the chain plates--the stays I or braided nylon. meet these about 2" rearward jackllne and all of the base of the most. I I other stays are vane gear used to steer the yacht I '. stainless slee I _ ~ fishing leader. after Ihe sails are set. it mounts on the stern near the rud- der post. rudder port is 3/16"i.d. tu 2" long and is flush with Ihe bottom plaflk and is 2" forward of the DELTA CLASS transom. EYE PLATE BICIIG YACHT HAROLD C. KETHMAN stay sai I hooks are dress hocks stainless spaced 5" apart, steel hook up hook. an .ails. most e~ralAl.' , . Plate 1 SITUATION AT THE held to deck qr mast OUTHAUL RACKS lower end of ma~,t is "FOREFOOT" OF THE With twa 1/4 -0 screws. slatted-- a 1/16 pin JIB--SHOWING THE "" is mounted through nut ARRANGEMENT OF slots are 3/8 to 1/2 apart the slot to prllvent THE JIB CLUB SWIVEL. • the mast from spiral line-wound around " ,#,,"" ""~ sliding an the the mast- holds the jack line close to the mast. ~~~\~6oJ..,j.I.\~\\ mast step. dural or brass ~~~~~\ q moat step is I 3" to 4" lono. ) side sta y mainsail attaches to a hook 1/16" mounted to bridle--note hole in mast. jib club-- maximum diameter of a wooden ~;:;: ""ClUb is 3/4". 3/8" - 0 brass screw used with ail fittings which fasten to the the lower portion of deck. th,i,s . as~embly is,,knawn as the kicking strap, the mainsail is tightened,or slack­ ened, by adjusting the turn­ buckle, this action varies the curvature, or "lift", of the sail. 3/8"-0 screws use 3/8" to 5/S" o.d, these are used to wooden dowel used to reinforce mast at base and gooseneck! tubing with a heavy wall. lighten or ad just holes (Ire larger than the SITUATION AT GOOSENECK & the stays, halyards diameter of the line and or sheets. they are KICKING STRAP--SHOWING NO SCALE are pitched inwards insure not used with wire. MOUNTING OF THE MAIN DRAWING 10 holding power. BOOM TO THE MAST. 3~ BOAT MODELS Left and Above: "Venus," the first of the Delta Class model yachts, pulls slowly away from the shoreline guided by its automatic steering mechanism-the vane gear. The large balsa feather acts as a weather vane' to hold the rudder true-to-course. Note the simple flowing lines of this double-end hull design. DELTA CLASS RACING YACHT by Harold C. Kethman Here's a low-cost, easy-to-build model racing' yacht that any average modeller can build quiCkly without ' special tools • If you've been looking for a compara­ Full-Size Plans are available from the into these pieces. Note that the inwales tively inexpensive, easy-to-build model author, as noted at the end of the article. and chine logs are inclined to one another racing yacht which retain.s the racing -make sure that this is taken into con­ featu.res and qualities of yachts built to BUILDING THE HULL: Start by cut­ sideration when angling the blocks. The the more complex M.Y.R.A.A. classes ... ting out the bulkheads, using the dimen­ stem block mounts on top of the batten if you want a model racing yacht which sions shown on Plate 2. Note that hal/­ backbone. Tack-glue these blocks on the is interesting to sail for both the novice bulkhead outlines are shown, for the left building board. and the veteran skipper .. your search sides only. Add the matching right sides is over! when drawing the bulkheads on 1/4" KEEL STRUT: Dra'IV a grid of 1" Even if you have to buy all the fittings, waterproof plywood. squares as shown at the bottom of Plate 2 rather than make them yourself, the total Cut out the bulkheads with a coping and plot the curve of the strut onto a sheet cost of the necessary materials for our saw. Don't try to short-cut the building of %" dural. Cut out the strut, using a yacht-including the vane gear, mahog­ process by eliminating the center cut­ metal-cutting blade in a coping saw any, glue, etc.-should be well within outs of the bulkheads-these are neces­ frame. After shaping the strut, drill the your means. And no whittling is required sary so the yacht can "breathe'," permit­ keel bolt and lead-flow holes. Use fine -no expensive special tools-no years of ting the inside of the hull to dry if water emery cloth to polish the strut and re­ laborious constructiori! There's one plank seeps in. move scratches and scars. on each side and two planks on the bot­ The yacht must be assembled upside­ tom, all over a simple framework sup­ down on a 52" x 2" x %" clear pine build­ LEAD TORPEDO: This is elliptical in ported by six bulkheads, with light bat­ ing' board. Note that the bulkheads are shape and circular in cross-section. Make ten-backbones spliced into a central keel mounted between wooden blocks. These a mold using two blocks of 14" x 4" x 11h" mount. And the design has been tested are beveled 2° as shown in Figure A, by clear pine. Mark the outline of the tor­ and proven successful over a period of making the bottom 1 / 16" narrower than pedo accurately on each half of the mold more than two years! the top. as the cavities must match when the What 'are you waiting for? Mount the blocks flush with the edge mold is closed. Gouge out the cavities to This model is only one of the many de­ of the bulkheads and tack them to the the contour of the torpedo, making both signs possible in a new class of model bulkheads (not to the building board) sides as equal as possible, and sand racing yachts, appropriately named after with I" brads. When these assemblies them smooth. and identified by the Greek symbol Delta have been mounted on the board, they Four V4" aligning pin holes are drilled, (an equilateral triangle), used in mathe­ will be inclined 88° aft (to the rear) . one through each corner of the mold. A matics and physics to denote a change. Next, mark the bulkhead locations on cut-out is required to seat the blocks Rating restrictions have been kept to an the building board, following the dimen~ around the strut. It is also necessary to absolute minimum-the major restriction sions shown in the half top-view on Plate cut out a pour hole and a series of small is ' on sail area, which is limited to 600 2. Then; drill holes in the board ' so that diameter vent holes so that the lead can square inches. The Delta Class was wood screws can secure the mounting be poured into the mold. evolved by Jim Dempsey, Bob Leopold, blocks to the board from below. (After Insert and center the keel strut and put and the writer-all members of the Long . the hull has been fully planked, the four aligning rods into the holes in the Island (N.Y.) Model Yacht Club. screws are removed) . mold to keep the unit from shifting. Then, Carefully check the Bill of Materials clamp the unit together with a large "C" and gather together the necessary ma­ STEM & TRANSOM BLOCKS: These clamp or in a vise. hogany, plywood and other lumber before are cut from pine or mahogany-the di­ Approximately eight pounds of lead are trying to begin construction. If you have mensions are shown on Plate 2 (inside 2A required to make the six pound torpedo. ' difficulty securing any of the materials and 3F) . Bevel all edges correctly as the Melt it in a steel or cast iron pot such as locally, check the sources of supply listed. planking and batten backbones must fair those used by plumbers. These have a BOAT MODELS 35 inwale / ioIIl:---------- ALL MATERIAL IS HARDWOOD OR MARINE PLYWOOD. DON'T USE BALSA! side view of .: : this hu II is not ·.·········.... shown as it is ".' . not necessary =UI "" "" to the COll- 1 .g.;;:: struction. ,.,'" this is a NO s..c.A1.E d r ow­ ing -- follow the dimensions! rudder post (2" 1/4"above top of rudder) ~-T--T-~r-~ BALANCED RUDDER Made from 24ST Dural eheet. DELTA CLASS DCIIG YACIT-U) LENGTH OVERALL _ 50 DESIGN BY: HAROLD C.
Load more

Recommended publications
  • Coast Guard Cutter Seamanship Manual
    U.S. Department of Homeland Security United States Coast Guard COAST GUARD CUTTER SEAMANSHIP MANUAL COMDTINST M3120.9 November 2020 Commandant US Coast Guard Stop 7324 United States Coast Guard 2703 Martin Luther King Jr. Ave SE Washington, DC 20593-7324 Staff Symbol: (CG-751) Phone: (202) 372-2330 COMDTINST M3120.9 04 NOV 2020 COMMANDANT INSTRUCTION M3120.9 Subj: COAST GUARD CUTTER SEAMANSHIP MANUAL Ref: (a) Risk Management (RM), COMDTINST 3500.3 (series) (b) Rescue and Survival Systems Manual, COMDTINST M10470.10 (series) (c) Cutter Organization Manual, COMDTINST M5400.16 (series) (d) Naval Engineering Manual, COMDTINST M9000.6 (series) (e) Naval Ships' Technical Manual (NSTM), Wire and Fiber Rope and Rigging, Chapter 613 (f) Naval Ships’ Technical Manual (NSTM), Mooring and Towing, Chapter 582 (g) Cutter Anchoring Operations Tactics, Techniques, and Procedures (TTP), CGTTP 3-91.19 (h) Cutter Training and Qualification Manual, COMDTINST M3502.4 (series) (i) Shipboard Side Launch and Recovery Tactics, Techniques, and Procedures (TTP), CGTTP 3-91.25 (series) (j) Shipboard Launch and Recovery: WMSL 418’ Tactics, Techniques, and Procedures (TTP), CGTTP 3-91.7 (series) (k) Naval Ships’ Technical Manual (NSTM), Boats and Small Craft, Chapter 583 (l) Naval Ship’s Technical Manual (NSTM), Cranes, Chapter 589 (m) Cutter Astern Fueling at Sea (AFAS) Tactics, Techniques, and Procedures (TTP), CGTTP 3-91.20 (n) Helicopter Hoisting for Non-Flight Deck Vessels, Tactics, Techniques, and Procedures (TTP), CGTTP 3-91.26 (o) Flight Manual USCG Series
    [Show full text]
  • Sunfish Sailboat Rigging Instructions
    Sunfish Sailboat Rigging Instructions Serb and equitable Bryn always vamp pragmatically and cop his archlute. Ripened Owen shuttling disorderly. Phil is enormously pubic after barbaric Dale hocks his cordwains rapturously. 2014 Sunfish Retail Price List Sunfish Sail 33500 Bag of 30 Sail Clips 2000 Halyard 4100 Daggerboard 24000. The tomb of Hull Speed How to card the Sailing Speed Limit. 3 Parts kit which includes Sail rings 2 Buruti hooks Baiky Shook Knots Mainshoat. SUNFISH & SAILING. Small traveller block and exerts less damage to be able to set pump jack poles is too big block near land or. A jibe can be dangerous in a fore-and-aft rigged boat then the sails are always completely filled by wind pool the maneuver. As nouns the difference between downhaul and cunningham is that downhaul is nautical any rope used to haul down to sail or spar while cunningham is nautical a downhaul located at horse tack with a sail used for tightening the luff. Aca saIl American Canoe Association. Post replys if not be rigged first to create a couple of these instructions before making the hole on the boom; illegal equipment or. They make mainsail handling safer by allowing you relief raise his lower a sail with. Rigging Manual Dinghy Sailing at sailboatscouk. Get rigged sunfish rigging instructions, rigs generally do not covered under very high wind conditions require a suggested to optimize sail tie off white cleat that. Sunfish Sailboat Rigging Diagram elevation hull and rigging. The sailboat rigspecs here are attached. 650 views Quick instructions for raising your Sunfish sail and female the.
    [Show full text]
  • Setting, Dousing and Furling Sails the Perception of Risk Is Very Important, Even Essential, to Organization the Sense of Adventure and the Success of Our Program
    Setting, Dousing and Furling Sails The perception of risk is very important, even essential, to Organization the sense of adventure and the success of our program. The When at sea the organization for setting and assurance of safety is essential dousing sails will be determined by the Captain to the survival of our program and the First Mate. With a large and well- and organization. The trained crew, the crew may be able to be broken balancing of these seemingly into two groups, one for the foremast and one conflicting needs is one of the for the mainmast. With small crews, it will most difficult and demanding become necessary for everyone to know and tasks you will have in working work all of the lines anywhere on the ship. In with this program. any event, particularly if watches are being set, it becomes imperative that everyone have a good understanding of all lines and maneuvers the ship may be asked to perform. Safety Sailing the brigantines safely is our primary goal and the Los Angeles Maritime Institute has an enviable safety record. We should stress, however, that these ships are NOT rides at Disneyland. These are large and powerful sailing vessels and you can be injured, or even killed, if proper procedures are not followed in a safe, orderly, and controlled fashion. As a crewmember you have as much responsibility for the safe running of these vessels as any member of the crew, including the ship’s officers. 1. When laying aloft, crewmembers should always climb and descend on the weather side of the shrouds and the bowsprit.
    [Show full text]
  • Herreshoff Collection Guide [PDF]
    Guide to The Haffenreffer-Herreshoff Collection The Design Records of The Herreshoff Manufacturing Company Bristol, Rhode Island The Francis Russell Hart Nautical Collection Kurt Hasselbalch Frances Overcash & Angela Reddin The Francis Russell Hart Nautical Collections MIT Museum Cambridge, Massachusetts © 1997 Massachusetts Institute of Technology All rights reserved. Published by The MIT Museum 265 Massachusetts Avenue Cambridge, Massachusetts 02139 TABLE OF CONTENTS Acknowledgments 3 Introduction 5 Historical Sketch 6 Scope and Content 8 Series Listing 10 Series Description I: Catalog Cards 11 Series Description II: Casting Cards (pattern use records) 12 Series Description III: HMCo Construction Record 13 Series Description IV: Offset Booklets 14 Series Description V: Drawings 26 Series Description VI: Technical and Business Records 38 Series Description VII: Half-Hull Models 55 Series Description VIII: Historic Microfilm 56 Description of Database 58 2 Acknowledgments The Haffenreffer-Herreshoff Project and this guide were made possible by generous private donations. Major funding for the Haffenreffer-Herreshoff Project was received from the Haffenreffer Family Fund, Mr. and Mrs. J. Philip Lee, Joel White (MIT class of 1954) and John Lednicky (MIT class of 1944). We are most grateful for their support. This guide is dedicated to the project donors, and to their belief in making material culture more accessible. We also acknowledge the advice and encouragement given by Maynard Bray, the donors and many other friends and colleagues. Ellen Stone, Manager of the Ships Plans Collection at Mystic Seaport Museum provided valuable cataloging advice. Ben Fuller also provided helpful consultation in organizing database structure. Lastly, I would like to acknowledge the excellent work accomplished by the three individuals who cataloged and processed the entire Haffenreffer-Herrehsoff Collection.
    [Show full text]
  • Building Outrigger Sailing Canoes
    bUILDINGOUTRIGGERSAILING CANOES INTERNATIONAL MARINE / McGRAW-HILL Camden, Maine ✦ New York ✦ Chicago ✦ San Francisco ✦ Lisbon ✦ London ✦ Madrid Mexico City ✦ Milan ✦ New Delhi ✦ San Juan ✦ Seoul ✦ Singapore ✦ Sydney ✦ Toronto BUILDINGOUTRIGGERSAILING CANOES Modern Construction Methods for Three Fast, Beautiful Boats Gary Dierking Copyright © 2008 by International Marine All rights reserved. Manufactured in the United States of America. Except as permitted under the United States Copyright Act of 1976, no part of this publication may be reproduced or distributed in any form or by any means, or stored in a database or retrieval system, without the prior written permission of the publisher. 0-07-159456-6 The material in this eBook also appears in the print version of this title: 0-07-148791-3. All trademarks are trademarks of their respective owners. Rather than put a trademark symbol after every occurrence of a trademarked name, we use names in an editorial fashion only, and to the benefit of the trademark owner, with no intention of infringement of the trademark. Where such designations appear in this book, they have been printed with initial caps. McGraw-Hill eBooks are available at special quantity discounts to use as premiums and sales promotions, or for use in corporate training programs. For more information, please contact George Hoare, Special Sales, at [email protected] or (212) 904-4069. TERMS OF USE This is a copyrighted work and The McGraw-Hill Companies, Inc. (“McGraw-Hill”) and its licensors reserve all rights in and to the work. Use of this work is subject to these terms. Except as permitted under the Copyright Act of 1976 and the right to store and retrieve one copy of the work, you may not decompile, disassemble, reverse engineer, reproduce, modify, create derivative works based upon, transmit, distribute, disseminate, sell, publish or sublicense the work or any part of it without McGraw-Hill’s prior consent.
    [Show full text]
  • Lazy Bag Installation Guide
    INTERNATIONAL DESIGN AND TECHNICAL OFFICE Lazy Bag Installation Guide © Neil Pryde Sails International 1681 Barnum Avenue Stratford, CONN. 06614 Phone: 203-375-2626 • Fax: 203-376-2627 Email: [email protected] Web: www.neilprydesails.com All material herein Copyright 2006-2007 Neil Pryde Sails International All Rights Reserved OVERVIEW The Neil Pryde Sails Mainsail Lazy Bag (MLB) is designed to be easily used and modular in design. It can conveniently be fitted and removed independently of the sail. • The MLB includes a zippered flap at the front of the bag that wraps around the mast to the opposite side of the bag and zippers closed. This is designed to reduce U.V. damage and keep birds from nesting inside the mainsail! • The front flap can be left in place while sailing, or folded back inside the bag and secured with a hook & loop strip. • The top zipper is also provided with a flap to help decrease water ingress. • The MLB is attached to the boom using slug/slides. The bag is NOT sewn between each slide so that rain water AND reefing lines can be led from the sail through the bag to the boom attachment points. • Two adjustable webbing straps provide Fore/aft tension; one strap is passed through the clew ring of the mainsail and the forward strap goes around the mast (and inside the halyards). The straps are inside the bag to reduce U.V. exposure and allow the bag to be pulled aft over the sail, covering it completely. A third strap at the front/top can be used to tighten up the forward girth of the bag.
    [Show full text]
  • Ready, Set, Go: Time to Start Sailing
    05_791431 ch01.qxp 4/28/06 7:23 PM Page 9 Chapter 1 Ready, Set, Go: Time to Start Sailing In This Chapter ᮣ Exploring the essentials of beginning sailing ᮣ Dissecting the parts of a sailboat ᮣ Answering basic sailing questions ᮣ Describing where sailing can take you It is an interesting biological fact that all of us have, in our veins, the exact same percentage of salt in our blood that exists in the ocean, and therefore, we have salt in our blood, in our sweat, in our tears. We are tied to the ocean. And when we go back to the sea, whether it is to sail or to watch it — we are going back from whence we came. —John F. Kennedy ater covers nearly three-quarters of the planet. Over the course of Whuman history, the oceans (as well as lakes and rivers) have served as pathways upon which trade and civilization have developed. Getting away from shore, you feel a link to those ancient mariners who set off for undiscov- ered lands. When you’re flying across the water, you’re harnessing the same forces ofCOPYRIGHTED nature that powered the early explorers.MATERIAL Why are humans drawn to the sea? President John F. Kennedy had a poetic answer. Generations before you have felt the call of the wind and waves, beck- oning to accept their offer of unknown possibilities — adventure and serenity. Even in today’s high-tech, fast-paced world, sailing regularly rates high on poll- sters’ lists of desirable activities. So if you ever find yourself dreaming of pack- ing it all in and setting sail over the horizon or of simply having your own boat to sail near home on a warm, breezy afternoon, you’re not alone.
    [Show full text]
  • Mom and Pop Go Sailing
    Mom and Pop Go Sailing Long after their new boat, Beowulf, was ready for sea, Skip and Linda Dashew held their patience and studied the weather maps. As the systems marched across the Tasman Sea to New Zealand and on into the Pacific, Skip said, "What we want is a big high to go through and then we will leave on the back of it." Nothing the matter with waiting for the right departure weather. After all, on a long passage, it is the only weather you get to choose. But, more than just comfort was at issue here. Their 80ft water-ballasted ketch is fleet-footed enough to keep pace with most weather systems. If they picked their departure right, they could ride the north-westerlies far out across the Pacific on their passage to the Austral Isles in the southern part of French Polynesia. With just the two of them on board, their goal was to reel off regular 300-plus mile days and, with the right conditions, there was every likelyhood they would achieve it. Skip likes to deprecate his latest creation as a "Mom and Pop motorsailor," but, in truth, it's much more than that. Having designed and built 45 yachts between 58-80 ft (probably the best known being their Deerfoot range) and having sailed just under 200k000 miles, Skip and Linda had an awful lot of experience to distill into Beowulf. The result is a quite singular yacht: long and lean with plumb bow and stern, a generous sailplan set on a ketch configuration of nearly equal masts - both of which carry asymmetrical spinnakers - and an articulating bowsprit to achieve the optimum angles downwind.
    [Show full text]
  • Inquiry Into the Chicago Yacht Club-Race to Mackinac Capsize and Fatalities
    Inquiry into the Chicago Yacht Club-Race to Mackinac Capsize and Fatalities Written by Chuck Hawley, John Rousmaniere, Ralph Naranjo and Sheila McCurdy With Technical Support from Ron Trossbach, Dan Nowlan, and Jim Teeters 10/18/20112/3/2014Independent Review Panel for the 2011 Mackinac Race Page 1 Table of Contents Introduction and Mission, Panel ......................................................................................................3 Summary of the Incident, Chuck Hawley ........................................................................................3 Findings, Chuck Hawley ..................................................................................................................4 Narrative, John Rousmaniere ...........................................................................................................8 Organization .......................................................................................................................10 WingNuts and her Crew .....................................................................................................13 Stability ..............................................................................................................................16 Weather ..............................................................................................................................18 Harnesses, Tethers and Jacklines .......................................................................................21 The Storm...........................................................................................................................21
    [Show full text]
  • Hardware & Rigging
    A Quarterly Publication of the American Model Yachting Association, Special Web Past Issue, from 2005, Issue Number 138 US$7.00 Special Web Edition Featuring Hardware & Rigging With over 20 two-day regattas each year and averages of more than 25 boats per event, the EC-12 is in a class by itself. If competitive racing action and interaction with others is what you’re after. Look no further than the East Coast 12-Meter. One quick glance of the AMYA’s regatta schedule page at www.amya.org/regattaschedule/racelist.html and you will see that no other class offers as much racing opportunities. There is probably a regatta coming to a lake near you. We invite you to come out a see for yourself how exciting the action is and how much fun you can have in model yachting. www.ec12.org www.ec12.org/Clubhouse/Discussion.htm • www.ec12.org/Clubhouse/12Net.htm On the Cover Contents of this Special Web Edition, The Front Cover is a photo of Rich Matt’s spinnaker driven AC boat; photo by Rich Matt. Rich’s article about Past Issue 138 “Spinnaker Adventures” is a great lead article for this issue. This special Web Feature issue of Model Yachting Magazine features ideas for Hardware and Rigging of your The Masthead ....................................................... 4 model yachts. As with all our Class Features issues, there President’s Introduction Letter .............................. 5 are many examples of ideas for a specific classes that are Editorial Calendar ................................................ 5 applicable to all classes. Model Yachting News ............................................ 6 Business Calendar ................................................. 6 Special Features–Hardware & Rigging: The American Model Yachting Association (AMYA) is a not-for- Spinnaker Adventures ..........................................
    [Show full text]
  • ADJUSTMENTS, RECOMMENDATIONS 12 13 CATAMARANS - Special Instructions Marks
    CATAMARANS ADJUSTMENTS, RECOMMENDATIONS 12 13 CATAMARANS - Special instructions Marks Catamarans are usually fitted with self-standing systems, - the mast must be placed lengthways in the boat; which keep the mast in place with a forestay and two top - to carry out the adjustments, use the mainsail halyard in order to mea- stays fastened to chain plates on the hull. sure the distance to an equidistant point on either side. These self-standing masts can be divided into two ϕ = 1 to 1,5° groups: Rake - pivoting masts called teardrop masts or wing masts 13.1 - finely adjust in order to find the best “Rake/Prebend” (wing masts as found on Formula (see below); 28 and F 40); - the tension of the forestay and the backstay should, if - fixed masts. possible, be the same as that of the shrouds and should These fixed masts are rigged in different ways: induce a rake ϕ (angled backwards) by about 1 to 1.5°. - masts on tripods: the spreaders are connected to the front by a martingale and a jumper enabling - e.g.: 10-metre mast: masthead the mast to be made rigid lengthways; pushed back by about 20 cm. - intermediate shapes: the mast is simply supported This mast rake will determine sideways by the spreaders and a bigger set of whether the boat has a lee shrouds (not self-standing lengthways, so no jum- helm or a weather helm. pers); The greater the rake, the more car take out weather helm and vice versa. - chimney masts: with no front jumper nor sprea- Catamaran rig ders, but the shrouds include lower shrouds and (diamond rig) Adjust only for a very small amount of pre-bend on occasionally a staysail stay.
    [Show full text]
  • Sailboat Rigging Checklist
    Sailboat Rigging Checklist Pre purchase and seasonal checks • P- Are chain plates aligned with the turnbuckles, stays, and shrouds? Keep in mind sometimes bends are planned. • S- Are there any signs of leaking around chain plates? * • S- Are masthead mounts for wind indicators and radio antennas secure? • S- If the mast is stepped on deck, is it supported properly below? Solid with no cracks? * • S- Are there any signs of galvanic corrosion at the base of the mast or where dissimilar metal fittings (winches, cleats, etc.) are attached to the mast? (On a painted aluminum mast, corrosion is indicated by bubbles around the fittings. On an unpainted mast, corrosion is indicated by heavy concentrations of white powder (some powder is acceptable) and pockmarks around fittings.) • S- Are welds on the mast and boom clean and free from corrosion? * • S- Are spreader ends secured to the shrouds? * • S- Are halyard fittings, especially the sheaves, in good condition and not crushed, split, or badly worn? Monthly checks • M- Are terminal fittings (swage fittings, Norseman, Sta-Lok, etc.) free from cracks, bends, and rust? Check with dye penetrant before heavy weather sailing or long passages. * • M- Can turnbuckles all be turned by normal force, not frozen with corrosion? • M- Are all turnbuckle barrels secured to the threads, either with rings, cotter pins, or by tightening locknuts? • M- Are the standing rigging, running rigging, and lifelines free from broken strands of wire and without apparent corrosion? Daily checks • D- What is the overall
    [Show full text]