Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Search this Thread Rate Thread Display Modes
Old 07-08-2019, 12:34   #1
Registered User
 
RKsailsolo's Avatar

Join Date: Mar 2013
Location: Punta Gorda, FL, USA
Boat: Jeanneau 349 2015
Posts: 717
Mob self rescUe

https://youtu.be/-vsAjNBRQ_I

Why haven't we seen this come to market?
__________________

RKsailsolo is offline   Reply With Quote
Old 07-08-2019, 13:37   #2
Registered User

Join Date: Oct 2014
Posts: 1,316
Re: Mob self rescUe

Clever scheme. I'm theorizing that there is a drogue on one end of the line that induces drag and thus pulls the boggie board with the MOB riding on it on return line towards the pulley sheeve. Definitely requires the MOB to be able to grab the messenger line immediately after falling in the water so as to deploy the rescue board / drogue to achieve a self rescue. But if there is a crew onboard they could simply reverse the boat and seemingly deploy the rescue board / drogue as they approach the MOB. The system's ability to bring the MOB onboard is pretty darn wonderful.

Seems like something one could rig up with just a few components and a bit of trial and error reconfigurations to optimize. Not sure of its PCT patent status, would require some searching of various patent databases to identify the inventor and patent application or issuance status. The film dates back to 2007 so a search with a date range may reduce the data to a reasonable number.

Thank you for sharing.
__________________

Montanan is offline   Reply With Quote
Old 07-08-2019, 13:48   #3
Registered User
 
Spot's Avatar

Join Date: Jan 2019
Location: Minnesota, USA
Boat: 21' trailer sailor & 8' sailing dinghy
Posts: 225
Re: Mob self rescUe

Looks like a fun ride back to the boat!

https://patents.google.com/patent/US5192238A/en
__________________
Big dreams, small boats...
Spot is offline   Reply With Quote
Old 07-08-2019, 13:48   #4
Registered User

Join Date: Oct 2014
Posts: 1,316
Re: Mob self rescUe

At 0.46 to 0.54 of the video one can see that there is a sack of some sort attached to the front end of the rescue board which before the film cuts away from the MOB it appears the MOB is beginning to manipulate. I suspect that sack has a drogue in it which the MOB must deploy to cause the board to be pulled back to the pulley and lifted on to the transom of the boat. This would be easy to achieve with boat with a Sugar Scoop or a swim platform on the aft end. Otherwise one would likely need to install some ladder or landing platform below the pulley so that the MOB can stand on the boat and not fall off the rescue board and become a MOB all over again.
Montanan is offline   Reply With Quote
Old 07-08-2019, 13:50   #5
Registered User

Join Date: Sep 2017
Location: Langley, WA
Boat: Nordic 44
Posts: 786
Re: Mob self rescUe

First you have to grab the line. That may be a problem. Then you have to be in flat water. Maybe if that was paired with an electronic MOB alarm that would disconnect your autopilot it would be viable. The developer may have decided that the legal liability was to big.
stormalong is offline   Reply With Quote
Old 07-08-2019, 13:57   #6
Registered User

Join Date: Oct 2014
Posts: 1,316
Re: Mob self rescUe

Quote:
Originally Posted by Spot View Post
Looks like a fun ride back to the boat!

https://patents.google.com/patent/US5192238A/en
Good find.

The patent would have expired so you would be free to manufacture your own.

Of course if you are properly teathered you shouldn't fall overboard.
Montanan is offline   Reply With Quote
Old 11-08-2019, 06:47   #7
Registered User
 
RKsailsolo's Avatar

Join Date: Mar 2013
Location: Punta Gorda, FL, USA
Boat: Jeanneau 349 2015
Posts: 717
Re: Mob self rescUe

Properly tethered apparently has many interpretations.

The MOB initial grab time is critical

The boogie board would still work in rough water as MOB body weight would make it plane.

Yes, I assume a drogue is used.

The second pass idea is a great attribute that can be done in a short period of time.

Love to see development of this idea with just the handful of responses in this forum. Wouldn't it be great to develop a working prototype among forum members?
__________________

RKsailsolo is offline   Reply With Quote
Reply

Tags
mob, rescue

Thread Tools Search this Thread
Search this Thread:

Advanced Search
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
MOB solo self rescue skkeith Marine Electronics 115 22-12-2018 07:33
Opencpn Dokuwiki Migration -MOB- Help Needed!!! MOB rgleason OpenCPN 87 20-12-2016 10:12
For Sale: McMurdo Guardian MOB System TWO MOB watches and Receiver petedd Classifieds Archive 1 26-09-2015 16:31
single handed sailing MOB self rescue farm sail General Sailing Forum 53 11-05-2015 00:27



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 21:53.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2019, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.