Cruisers Forum
 


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 11-05-2019, 10:00   #1
Registered User
 
La Vie Dansante's Avatar

Join Date: Dec 2018
Location: Afloat
Boat: Fountaine Pajot Helia 44
Posts: 24
Measuring temp in the Gulf Stream

I'll be sailing up the Gulf Stream this month, from Key West to St. Simon's. In order to hug the western wall, I'd like to measure the sea surface temp along the way. Do digital laser IR thermometer guns work for this purpose, or should I tow something?
__________________
[SIGPIC][/SIGPIC]
That's why I wander and follow La Vie Dansante
On the night wind that takes me
just where I want, That's all I want
La Vie Dansante
La Vie Dansante is offline   Reply With Quote
Old 11-05-2019, 10:24   #2
Registered User

Join Date: Jul 2005
Location: Bellingham
Boat: Outbound 44
Posts: 9,319
Re: Measuring temp in the Gulf Stream

If you have a saltwater pump at the galley you can pump seawater into a cup and use the IR thermometer to get a reasonably close temp reading.
__________________
Paul
Paul L is offline   Reply With Quote
Old 11-05-2019, 10:36   #3
Registered User

Join Date: Oct 2015
Posts: 2,007
Re: Measuring temp in the Gulf Stream

If the instruments on your boat are capable of showing you set and drift, (and based on you boat, I would guess they are...) that will actually be a more immediate and helpful way of doing what you are trying to do.

I have a transducer that gives me ocean surface temperature, and I find it useful for fishing, but for staying in the gulf stream you'd be better off monitoring the current rate and direction.
billknny is offline   Reply With Quote
Old 12-05-2019, 00:48   #4
cruiser

Join Date: Apr 2007
Location: Australia
Boat: Island Packet 40
Posts: 6,275
Images: 7
Re: Measuring temp in the Gulf Stream

A lot of fish finders also display water temperature and some of them have nmea output which might let you log temperature on a computer.
RaymondR is offline   Reply With Quote
Old 12-05-2019, 04:36   #5
Registered User

Join Date: Mar 2011
Location: Southport CT
Boat: Sabre 402
Posts: 2,517
Re: Measuring temp in the Gulf Stream

We used to fill a bucket from over the side and stick a thermometer in it. Not complicated.
psk125 is offline   Reply With Quote
Old 12-05-2019, 08:07   #6
Registered User
 
mvmojo's Avatar

Join Date: Mar 2018
Location: www.mvmojo.com
Boat: Robt Beebe Passagemaker 49-10 in steel
Posts: 424
Re: Measuring temp in the Gulf Stream

Off shore racing to Bermuda, racers fill the toilet bowl with water and drop in a pool thermometer.
mvmojo is offline   Reply With Quote
Old 12-05-2019, 15:18   #7
Registered User

Join Date: Sep 2014
Posts: 236
Re: Measuring temp in the Gulf Stream

No idea if a IR ďgunĒ will work reliably tryin to measure sea surface temps. I think that the observation of temperature is certainly valuable for determining if youíre on or off the bus. The online stream forecasts are pretty good, so donít neglect plotting where the west wall is. On one northbound voyage several years ago the stream took an almost 90 degree right(east) off Canaveral and didnít head back north towards Hatteras for about a hundred or so miles. Baffled me at the time.
boatman1 is offline   Reply With Quote
Old 12-05-2019, 15:40   #8
Marine Service Provider
 
Snore's Avatar

Join Date: Jan 2011
Location: St. Petersburg, FL
Boat: Delivery Capt- I move OP Boats
Posts: 3,617
Send a message via Skype™ to Snore
Re: Measuring temp in the Gulf Stream

You are overthinking this. When SOG is greater than speed through water you are in it. From KW to West Palm/ Lake Worth Inlet, stay in 300 feet of water or more and yeeeehaw!
__________________
"Whenever...it requires a strong moral principle to prevent me from deliberately stepping into the street, and methodically knocking people's hats off- then, I account it high time to get to sea..." Ishmael -a link to my delivery website is in my profileó
Snore is offline   Reply With Quote
Old 12-05-2019, 17:59   #9
Registered User

Join Date: Mar 2011
Location: Southport CT
Boat: Sabre 402
Posts: 2,517
Re: Measuring temp in the Gulf Stream

Quote:
Originally Posted by Snore View Post
You are overthinking this. When SOG is greater than speed through water you are in it. From KW to West Palm/ Lake Worth Inlet, stay in 300 feet of water or more and yeeeehaw!
Unless you stumble into an eddy and it starts pushing you the wrong way...
psk125 is offline   Reply With Quote
Old 12-05-2019, 19:27   #10
Registered User

Join Date: Apr 2011
Posts: 684
Re: Measuring temp in the Gulf Stream

Yes the IR device will work fine. have use one several times thru the Gulf stream to bermuda or to caribbean.--Usually the depth meter will also have a temp reading.
maine50 is offline   Reply With Quote
Old 12-05-2019, 20:08   #11
Registered User

Join Date: Sep 2015
Location: Out of Norfolk Va
Boat: Tartan 37
Posts: 687
Re: Measuring temp in the Gulf Stream

We came up from Bahamas two weeks ago and the West wall was cranking. Had over 3.5-4kts current at times. Made a 216nm day, that's a +9kts avg under just sail in a 37ft boat. We have a temp chart on the Garmin plotter, which works great to see small changes. My bet, it's so hot in the keys, may be hard to see temperature changes. We used the Gulf Stream predictor on Passageweather.com. It predicts the stream position for a couple days out. Print it out and layout waypoint coming up the coast. Like driving up I95.
puffcard is offline   Reply With Quote
Old 13-05-2019, 06:45   #12
Marine Service Provider
 
Snore's Avatar

Join Date: Jan 2011
Location: St. Petersburg, FL
Boat: Delivery Capt- I move OP Boats
Posts: 3,617
Send a message via Skype™ to Snore
Re: Measuring temp in the Gulf Stream

Quote:
Originally Posted by psk125 View Post
Unless you stumble into an eddy and it starts pushing you the wrong way...


Going up the coast that is a low probability. Then you would see SOG less than boat speed.
__________________
"Whenever...it requires a strong moral principle to prevent me from deliberately stepping into the street, and methodically knocking people's hats off- then, I account it high time to get to sea..." Ishmael -a link to my delivery website is in my profileó
Snore is offline   Reply With Quote
Reply

Tags
gulf stream

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
Measuring eng temp with IR guage pwilletts Engines and Propulsion Systems 14 04-10-2016 13:28
Westerbeke 46 Temp Sender vs. Temp Switch zboss Engines and Propulsion Systems 8 29-10-2013 21:11

Advertise Here


All times are GMT -7. The time now is 22:30.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2023, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2023, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.