The March 2013 issue of Westlawn Institute's free journal The Masthead is posted

Discussion in 'Education' started by dgerr, Mar 25, 2013.

  1. dgerr
    Joined: Jul 2004
    Posts: 120
    Likes: 19, Points: 0, Legacy Rep: 221
    Location: New York

    dgerr Senior Member

    The March 2013 issue of Westlawn Institute's free online journal, The Masthead, is now posted.

    Highlights in this edition:
    • The First Powerboats
    • ABYC President’s Message – Corrosion Experiment
    • Westlawn Drives Down Education Costs
    • On the Drawing Board: Persak & Wurmfeld 44M Schooner
    • Westlawn Profiles Krisha Naroski Plauché
    • MV Lyubov Orlova
    • Orca3D User Tip – Creating a Bow Cone
    • ABYC Tech Notes – ABYC S-30 and Heavier Outboards
    • Know it All Answer: On Finding the Weight and CG of an Existing Boat
    • Know it All Question: On Sizing a Lifting Keel Hoist Line
    • We Get Mail: More on HINs
    • Martin’s Yarns – Navigator Sea Trials, May Day 1940
    • News & Views, Masthead Combined Index
    • Masthead Archives
    • Westlawn Information

    Excerpts:

    The First Powerboats
    By Dave Gerr, Westlawn Institute Director

    Robert Fulton . . . Well No
    The fact is, that back in school-your books probably told you that Robert Fulton and his Clermont was the first successful steamboat ever built. This would, of course, make her the first successful powerboat, period. The fact is, though, that these books are wrong.

    Read this fascinating true story of the development of the first powerboat.

    ABYC S-30 and the Effects of Heavier Outboard Engines
    By Brian Goodwin, ABYC Technical Director

    With each generation we tend to get heavier. The same holds true with boats, equipment/accessories and engines. In this article, will take a look at ABYC
    S-30 Outboard Engine and Related Equipment Weights. S-30 is classified as an industry conformity standard with the intent of providing a guide for determining outboard engine weights for flotation and capacity.

    While S-30 is a relatively short standard, it is fairly far reaching and important because it is referenced in numerous standards including H-5 Boat Load Capacity, H-8 Buoyancy in the Event of Flooding/Swamping, H-35 Power and Load Capacity of Pontoon Boats, and H-28 Inflatable Boats to name a few.

    Orca3D User Tip
    By Bruce Hayes, Principal Naval Architect, DRS Defense Solutions, LLC

    Designing a Hull With a Bow Cone
    Bow cones may be easily added to a hull, using Rhino's Sweep 2 Rails function (Fig. 1).

    Begin by designing the hull surface so that the edge that would normally be the stem is, instead, the tangent line, pulling away from centerline as it rises from the forefoot to the deck (Fig. 2).

    Next (Fig. 3), mirror the hull about centerline, using Rhino's Mirror command, and compute waterlines on both surfaces, using Orca3D's section command. Next, use the Arc command, with the Tangent to Two Curves optionto draw an arc at the sheerline, bridging the two surfaces and tangent to the two sheerlines. When using the command, position your cursor near the end of the sheerline; Rhino will show a tangent line and the end point of the sheerline.


    Read the complete articles and more in this issue.
    Go to:
    http://www.westlawn.edu/news/Masthead25/index.html

    Note:
    New issues of The Masthead are in Internet flipping-book format, with control icons are located on the bar at the bottom of the screen

    If you prefer to read it in standard PDF format, go to the new flipping-book format and click on the download button on the bottom gray bar.

    To read The Masthead in the PDF format, you must have a current version of ADOBE ACROBAT READER. If you don't have it go to: http://get.adobe.com/reader/otherversions/

    You can click on:

    http://www.westlawn.edu/news/index.asp#Newsletter

    To see all back issues and read whichever one you like.

    Dave Gerr
    Director, Westlawn Institute
    www.westlawn.edu
     
Loading...
Similar Threads
  1. Leo Lazauskas
    Replies:
    0
    Views:
    1,429
  2. CDBarry
    Replies:
    0
    Views:
    1,556
  3. CDBarry
    Replies:
    1
    Views:
    1,767
  4. CDBarry
    Replies:
    5
    Views:
    2,892
  5. dgerr
    Replies:
    0
    Views:
    1,428
  6. dgerr
    Replies:
    2
    Views:
    1,918
  7. dgerr
    Replies:
    1
    Views:
    1,763
  8. dgerr
    Replies:
    0
    Views:
    2,322
  9. dgerr
    Replies:
    1
    Views:
    1,523
  10. dgerr
    Replies:
    2
    Views:
    3,507
Forum posts represent the experience, opinion, and view of individual users. Boat Design Net does not necessarily endorse nor share the view of each individual post.
When making potentially dangerous or financial decisions, always employ and consult appropriate professionals. Your circumstances or experience may be different.