Cruisers Forum
 


Join CruisersForum Today

Reply
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on Cruisers Forums. Advertise Here
 
Thread Tools Search this Thread Rate Thread Display Modes
Old 28-10-2017, 12:55   #1
Registered User

Join Date: Aug 2009
Location: Lake Macquarie NSW
Boat: Chamberlin 11.6 catamaran
Posts: 410
Man overboard bluetooth

Hello

Has anyone used any of the bluetooth man overboard "tethers". I am interested in picking up a couple of tags from OLAS but would like to know if anyone has used them first.

https://alertandfind.com/

cheers

Phil
__________________

catsketcher is offline   Reply With Quote
Old 28-10-2017, 16:03   #2
Registered User

Join Date: Dec 2010
Location: W Carib
Boat: Wildcat 35, Hobie 33
Posts: 11,961
Re: Man overboard bluetooth

Blue tooth on a good day has a range of about 150' ... better think fast!
__________________

belizesailor is online now   Reply With Quote
Old 28-10-2017, 16:08   #3
Registered User

Join Date: Jan 2011
Location: UK/France
Boat: Gib'Sea 402
Posts: 368
Re: Man overboard bluetooth

I have some of these though they're now more expensive than when I bought. They work as advertised but I've never really used them yet on board as a MOB device.
hoolie is offline   Reply With Quote
Old 28-10-2017, 16:10   #4
Registered User

Join Date: Jan 2011
Location: UK/France
Boat: Gib'Sea 402
Posts: 368
Re: Man overboard bluetooth

Quote:
Originally Posted by belizesailor View Post
Blue tooth on a good day has a range of about 150' ... better think fast!
Exactly. Crew out of range = MOB
hoolie is offline   Reply With Quote
Old 28-10-2017, 16:38   #5
Registered User

Join Date: Dec 2010
Location: W Carib
Boat: Wildcat 35, Hobie 33
Posts: 11,961
Re: Man overboard bluetooth

Quote:
Originally Posted by hoolie View Post
Exactly. Crew out of range = MOB
Ah, OK...so it relies on BlueTooth's limited range?

Be good if it could automatically kick off a PLB for actual tracking.
belizesailor is online now   Reply With Quote
Old 28-10-2017, 16:45   #6
Registered User

Join Date: Aug 2009
Location: between the devil and the deep blue sea
Boat: a sailing boat
Posts: 18,335
Re: Man overboard bluetooth

Any "BT lost" alarm app on any smartphone will work.

The problem though is not just to know that a person went overboard. In many accidents it has been found that the bigger challenge is to find the person after a while.

Think of MOB devices based on AIS/DSC systems - these start alarms on separate platforms and let you find the crew in more challenging conditions. And not just you but also all vhf or ais equipped boats around you will know there is a person in the water.

Cheers,
b.
barnakiel is offline   Reply With Quote
Old 28-10-2017, 23:38   #7
Registered User

Join Date: Jun 2013
Location: canada
Posts: 2,854
Re: Man overboard bluetooth

I can't imagine this working well. I never get more then 15-20' on Bluetooth with my phone. Every time someone goes down into the galley or head you'd be getting mob alarms. How are you getting 150' from Bluetooth?
smac999 is offline   Reply With Quote
Old 29-10-2017, 02:26   #8
Registered User

Join Date: Aug 2009
Location: Lake Macquarie NSW
Boat: Chamberlin 11.6 catamaran
Posts: 410
Re: Man overboard bluetooth

The idea is that when the bluetooth goes out of range the beacon goes off. It seemed like a nice way to be able to sleep a little better when off watch. I usually worry a little about my wife on watch and she worries about me. So knowing that I will get an alarm if she goes overboard would be nice. Of course we should not fall overboard in the first place but it is for peace of mind as well.

I also have a waterproof handheld VHF with GPS. This can talk to the boat's VHF and buddy up so I have a way of finding someone as long as they have the VHF in clipped to them. So the on watch person has to have VHF with a flare or two as well to help with being found again.

I will probably buy a few to keep on the boat anyway. They are pretty cheap.

cheers

Phil
catsketcher is offline   Reply With Quote
Old 01-11-2017, 15:26   #9
Registered User

Join Date: Nov 2015
Location: Ireland
Posts: 294
Re: Man overboard bluetooth

Has anyone found a “BT lost” app for the iPhone that works well and doesn’t need a particular type of beacon to pair with?
AedanC is offline   Reply With Quote
Old 02-11-2017, 14:58   #10
Registered User

Join Date: Dec 2015
Posts: 141
Re: Man overboard bluetooth

Have ordered the crewsaver device for testing. Will report back here.
EvilRabbit is offline   Reply With Quote
Old 02-11-2017, 17:07   #11
Registered User

Join Date: Feb 2015
Posts: 847
Images: 1
Re: Man overboard bluetooth

You've got to be kidding. If I move across the room, I lose the bluetooth connection between my computer and keyboard. I expect a simple engine room check would trigger a MOB. No thanks.

I'll take an AIS based device that is water activated and actually provides a reasonable way to locate the victim.
__________________
www.MVTanglewood.com
tanglewood is offline   Reply With Quote
Old 04-11-2017, 01:53   #12
Registered User

Join Date: Nov 2015
Location: Ireland
Posts: 294
Re: Man overboard bluetooth

Bluetooth comes in many versions which trade off power consumption, range and speed. Keyboards would have one of the lowest power and consequently lowest range versions. As a contrasting example my kids wander all around the house with a loud speaker which plays music from a device in one room using Bluetooth.
AedanC is offline   Reply With Quote
Old 04-11-2017, 02:48   #13
Beloved by chandlers everywhere

Cruisers Forum Supporter

Join Date: Feb 2017
Location: Med
Boat: Dufour 455 GL
Posts: 217
Re: Man overboard bluetooth

I bought a few of the OLAS tags and I am disappointed. They are practically unusable, due to the number of false alarms. On my 45' monohull I have a 50/50 chance of triggering the alarm by going to the front toilet.

It seemed like a more economical option compared to personal AIS, but in retrospect I feel it was false economy. A single wearable AIS unit would have cost about the same, and it would be far more useful.

1/5
__________________

LongRange is offline   Reply With Quote
Reply

Tags
overboard

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
Man Overboard Recovery Systems maxingout General Sailing Forum 65 29-04-2010 17:49
Man Overboard sailorboy1 General Sailing Forum 44 03-03-2010 01:12
For Sale: Raymarine Lifetag Wirless Man Overboard System (MOB) - $475 dworkman Classifieds Archive 1 02-11-2009 13:14
Man Overboard Drill Ex-Calif The Sailor's Confessional 1 13-07-2007 21:10

Advertise Here


All times are GMT -7. The time now is 08:58.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2020, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.