Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 24-12-2013, 07:27   #31
Registered User

Join Date: Dec 2010
Location: W Carib
Boat: Wildcat 35, Hobie 33
Posts: 7,921
Quote:
Originally Posted by Adelie View Post
...
2. Lots fewer recreational powerboats making long offshore passages so likelihood of being hit by overpowering waves is much lower on a global scale.
...
Yes, way fewer power vessels out cruisng. Most power boaters I know stick pretty close to home and favor fair weather. So less likely to get into severe weather and thus fewer incidents to report. Need a stat based on % of type of cruising boats to really compare.
__________________

__________________
belizesailor is online now   Reply With Quote
Old 24-12-2013, 12:17   #32
Marine Service Provider
 
AnchorageGuy's Avatar

Join Date: Mar 2003
Location: Wherever the boat is!
Boat: Marine Trader 34DC
Posts: 4,618
Re: Power boat capsize?

Quote:
Originally Posted by darylat8750 View Post
There was a semi planing trawler style boat (about 48 ft I think) sunk in the N.A. River system within the last year or so. In a shallow area a large tow sucked enough water out from the edge of the river that the small boat grounded, leaned over far enough that the boat foundered before it could refloat. Lawyers are still involved so we haven't heard the whole story yet. Maybe not applicable to this question but interesting.
Here is a report on the capsize of the trawler on the Tenn Tom. This is a member of one of our boating organizations. Cause of trawler capsize unclear . Chuck
__________________

__________________
Chesapeake Bay, ICW Hampton Roads To Key West, The Gulf Coast, The Bahamas

The Trawler Beach House
Voyages Of Sea Trek
AnchorageGuy is offline   Reply With Quote
Old 24-12-2013, 13:54   #33
Senior Cruiser
 
hpeer's Avatar

Cruisers Forum Supporter

Join Date: Dec 2008
Location: Philadelphia
Boat: Murray 33-Chouette & Pape Steelmaid-44-Safara-both steel cutters
Posts: 3,896
Re: Power Boat Capsize?

Quote:
The Ryan’s Commander capsized off Spillars Cove, near Bonavista, on September 19, 2004. In the tragic wreck, two brothers were lost: Dave and Joe “June” Ryan.
Quote:
Ryan's Commander

The Ryan's Commander
The Ryan's Commander was a 65' Newfoundland small fishing vessel (NSFV) which sank as a result of the loss of stability, capsizing in 2004 off the coast of Newfoundland, Canada. The design of the vessel, as well as some of the assumptions made of the vessels apparent stability before delivery, have raised questions of ethics, regulations, and practices in light of the loss of life and the vessel itself.
Ryan's Commander - Narciki

Pic of a similar boat....Arctic Leader
Attached Images
 
__________________
hpeer is offline   Reply With Quote
Old 24-12-2013, 14:07   #34
Senior Cruiser
 
hpeer's Avatar

Cruisers Forum Supporter

Join Date: Dec 2008
Location: Philadelphia
Boat: Murray 33-Chouette & Pape Steelmaid-44-Safara-both steel cutters
Posts: 3,896
Re: Power Boat Capsize?

Last spring I was eves dropping on our Marina Manager giving a weather briefing to a few power boaters who were prepping to cross the Delaware Bay from Delaware City to Cape May. I really thought he over did it, until is at down and thought it through.

These guys were mostly doing the Great Circle and none had been on such an exposed bit of water before. Yes the Chesapeake, but that has more places to seek shelter and less current

Anyway, looking at the height of the fly bridge, and the draft, it is easy to see that these guys could, if handled poorly, go over. They will likely get at least a rough ride.

I suspect fewer power boats, trawlers, etc. turn turtle because they are less exposed that sailboats, they stay inshore. There is a 65 footer with 4-1/2' of draft sitting in the yard right now. Double decker with a fly bridge.

Someone above mentioned sea height and boat length. That is probably from some studies after Fastnet and is described in Coles Heavy Weather Sailing.
__________________
hpeer is offline   Reply With Quote
Old 26-12-2013, 07:34   #35
Registered User

Join Date: Aug 2009
Location: Hudson Valley N.Y.
Boat: contessa 32
Posts: 826
Re: Power Boat Capsize?

Maybe 5 years back, a cabin cruiser flipped here near West Point in flat water when she was driven going fast into shoaling water and skipper put her hard over as he recognized his mistake;resulting capsize trapped some below decks in + - 4 feet of water and at least one drowned. Bottom was very sticky mud and suspect craft had a deep v bottom but it would be interesting to know the physics that caused this tragedy on a pleasant summer day.
__________________
mrohr is offline   Reply With Quote
Old 26-12-2013, 08:26   #36
Registered User
 
Sand crab's Avatar

Join Date: Oct 2010
Location: Gig Harbor, WA
Boat: 34' Crowther tri sold 16' Kayak now
Posts: 3,157
Re: Power Boat Capsize?

Quote:
Originally Posted by hpeer View Post
Ryan's Commander - Narciki

Pic of a similar boat....Arctic Leader
And no one thought this boat may not be stable.
Attached Thumbnails
Click image for larger version

Name:	Ryanscommander.jpg
Views:	315
Size:	39.3 KB
ID:	72740  
__________________
We don't need no stinking badges.
Sand crab is offline   Reply With Quote
Old 22-08-2014, 21:36   #37
Registered User
 
Steady Hand's Avatar

Join Date: Jul 2014
Location: Crewing All of 2017 Available Globally
Boat: OPB = Crewing in 2017
Posts: 4,851
Re: Power Boat Capsize?

Here is a quote from an article in Yachting mag

"We often think of the size and steepness of waves as being the deciding factor in capsize (along with a vessel's inherent stability characteristics). But research suggests that the most significant factor is whether a wave is breaking or not. No matter the strength of the wind, the wave height or its steepness, it only takes a breaker to knock a boat over - and that wave does not need to be very large.
Research a decade or so ago by the Wolfson Unit at University of Southampton University concluded that for a 10m yacht, ‘you only need a breaking wave of 3m to pose a risk of capsize'.
Various types of boat and keel type were tested. A wave height of 60 per cent of the boat's length capsized all the models they tested. So just to spell this out, a 32-footer would almost certainly be capsized a breaking wave with a height of as little as 20ft.

Read more at Capsized by a breaking wave | Yachting World
__________________
Ahoy All Sailors! Need experienced crew for a passage or delivery in Atlantic, Pacific, Caribbean, Med, PNW, ICW, coastal or across an ocean anytime in 2017? I am available on 24hr notice. See my CF Profile "About Me" page for details. Happy to lend a hand!
Steady Hand is offline   Reply With Quote
Old 22-08-2014, 22:02   #38
Registered User

Join Date: Apr 2011
Posts: 2,243
Re: Power Boat Capsize?

Quote:
Originally Posted by Steady Hand View Post
Here is a quote from an article in Yachting mag

"We often think of the size and steepness of waves as being the deciding factor in capsize (along with a vessel's inherent stability characteristics). But research suggests that the most significant factor is whether a wave is breaking or not. No matter the strength of the wind, the wave height or its steepness, it only takes a breaker to knock a boat over - and that wave does not need to be very large.
Research a decade or so ago by the Wolfson Unit at University of Southampton University concluded that for a 10m yacht, ‘you only need a breaking wave of 3m to pose a risk of capsize'.
Various types of boat and keel type were tested. A wave height of 60 per cent of the boat's length capsized all the models they tested. So just to spell this out, a 32-footer would almost certainly be capsized a breaking wave with a height of as little as 20ft.

Read more at Capsized by a breaking wave | Yachting World
Those wave heights are all on the beam, of course. Which is why active steering techniques in a storm are important.
__________________

__________________
MarkSF is offline   Reply With Quote
Reply

Tags
capsize, power boat

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Girl Overboard ! TigerLilly Health, Safety & Related Gear 82 24-02-2016 23:07
Questions About the Wider Beams on Newer Boats Rohan Monohull Sailboats 84 30-09-2013 05:48



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 17:02.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.