Sailing Lake Michigan
by Nava Thompson
Title
Sailing Lake Michigan
Artist
Nava Thompson
Medium
Photograph - Photography
Description
A photo taken by Nava Thompson of a sailboat in Door County, Wisconsin. This is available for visitors to sail for two hours on Lake Michigan.................................................Traditional sailboats are monohulls, but multi-hull catamarans and trimarans are gaining popularity. Monohull boats generally rely on ballast for stability, and usually are displacement hulls. This stabilizing ballast can, in boats designed for racing, be as much as 50% of the weight of the boat, but is generally around 30%. It creates two problems; one, it gives the monohull tremendous inertia, making it less maneuverable and reducing its acceleration. Secondly, unless it has been built with buoyant foam or air tanks, if a monohull fills with water, it will sink.................................Multihulls rely on the geometry and the broad stance of the multiple hulls for their stability, eschewing any form of ballast. Indeed, multihulls are designed to be as light-weight as possible, yet maintain structural integrity. They are often built with foam-filled flotation chambers and many modern commercial trimarans are rated as unsinkable, meaning that, should every crew compartment be completely filled with water, the hull itself has sufficient buoyancy to remain afloat................................This absence of ballast also results in some very real performance gains in terms of acceleration, top speed, and maneuverability........................The lack of ballast makes it much easier to get a multihull on plane, reducing its wetted surface area and thus its drag.The absence of drag improves wind precision, giving it its great handling.
Compared to a monohull, acceleration to top speed is near-instantaneous.
Reduced overall weight means a reduced draft, with a much reduced underwater profile. This, in turn, results directly in reduced wetted surface area and drag, yielding higher top speeds......................................................................
Without a ballast keel, multihulls can go in shallow waters where monohulls can't.................................There are some tradeoffs, however, in multihull design:....................A well designed ballasted boat can recover from a capsize, even from turning over completely. The Swan 65 Sayula II won the 1973-74 Whitbread Round the World Race after doing a 180 degree capsize in the Southern Ocean. Righting a multihull that has gotten upside down is difficult in any case and impossible without outside help unless the boat is small or carries special equipment for the purpose. Several round the world racing multihulls have been lost after they capsized.
Multihulls often prove more difficult to tack, since the reduced weight leads directly to reduced momentum, causing multihulls to more quickly lose speed when headed into the wind.
Also, structural integrity is much easier to achieve in a one piece monohull than in a two or three piece multihull whose connecting structure must be substantial and well connected to the hulls.
All these hull types may also be manufactured as, or outfitted with, hydrofoils.
Uploaded
June 29th, 2014
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Viewed 399 Times - Last Visitor from New York, NY on 03/25/2024 at 12:28 PM
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Comments (34)
Joni Eskridge
Fun summer image! Congrats on your 3rd place tie in the Midwest American Photography Summer Fun contest.
Nava Thompson
Third Place Contest Win in 'Summer Fun In Midwest America Photography' contest 2/20/17
David T Wilkinson
Nava, congratulations on a THIRD PLACE tie out of 155 entries in the SUMMER FUN IN MIDWEST AMERICA PHOTOGRAPHY Contest and on the SPECIAL HIGHLIGHTED ARTIST recognition on the MIDWEST AMERICA PHOTOGRAPHY Group homepage.
Nikolyn McDonald
I always enjoy an image with a person in it - sort of an environmental portrait that is as much about the context (here the boat and sailing) as the subject (the man). Congratulations on your win in the In-House Contest at WFS
Barbara McMahon
Congratulations on your WFS In House Contest Nava Jo! Wonderful capture of both man and boat! l/f
Carolyn Rosenberger
Congrats on your contest win, Nava Jo! Great photo, and, yes, I DID notice the name on the boat! L&F
Joyce Dickens
Awesome work Nava; Congratulations on your win in the WFS contest...hope you are doing well my friend!
Doug Kreuger
Nava, Congratulations on your WFS Contest win with one of my Favorites! Makes me dream about sailing in a tall ship. L&F
Randy Rosenberger
A HUGE CONGRATULATIONS to you for winning our PHOTO to match Our "In House" photo contest TOPIC for this week's entries! You have done a superlative job, on the matching of your lovely photo, with the relevancy of the SUBJECT GIVEN! I am very happy for you and proud of your great accomplishments! Check out our HOMEPAGE, and the winning entries are just below SUPER FEATURES, AND JUST ABOVE REGULAR FEATURES! Forever, Elvis http://fineartamerica.com/groups/wisconsin-flowers-and-scenery.html
Nava Thompson replied:
Randy---thank you very much for the honor or being chosen as one of the winners for the boat contest in WFS!
Doug Kreuger
A very cool capture Nava! This one has all the makings for a high sea adventure! ---Love it! L/V&F
Nava Thompson replied:
Thank you Doug----I know you have stories to tell about adventures on the porch/sea! :) Thanks for the LVF