Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 06-09-2011, 18:28   #16
Registered User
 
svHyLyte's Avatar

Join Date: Mar 2006
Location: Tampa Bay area, USA
Boat: Beneteau First 42
Posts: 3,434
Images: 25
Re: collision avoidance in Mexico :AIS or radar or ?

Quote:
Originally Posted by h20man View Post
I do not think it is just you.. the panga and small stuff probably is not using AIS...

But anything bigger 100Tons should be... and the cost benefits of AIS in my opinion are fair.

but the small stuff will be difficult to see, as not all of them use lighting...

Waterman, I agree with you entirely. However, the OP's question was "either one or the other". Frankly, AIS is so cheap that there's no reason not to have it. But, one cannot rely on it alone 'cuase it "ain't" going to tell you when a 1/2 ton panga zooming along at 20 knots is going to (hopefully) cross your bow while even an old radar might. Never-the-less, different ships, different long-splices...
__________________

__________________
"It is not so much for its beauty that the Sea makes a claim upon men's hearts, as for that subtle something, that quality of air, that emanation from the waves, that so wonderfully renews a weary spirit."
svHyLyte is offline   Reply With Quote
Old 06-09-2011, 18:29   #17
Registered User
 
bangkaboat's Avatar

Join Date: Feb 2009
Location: Sihanoukville, Cambodia
Boat: looking
Posts: 593
Images: 3
Re: collision avoidance in Mexico :AIS or radar or ?

If you have to make an "either, or" choice, despite the fact that I have AIS, I'd recommend radar. No, radar won't pick up the smaller stuff & woodies, but it has a value for targetting ships, land masses, weather at night & in fog. However, nothing replaces the invaluable "eyeball-a-tron", as others have mentioned. In fact, I carry at least 2, everywhere I go.
__________________

__________________
bangkaboat is offline   Reply With Quote
Old 06-09-2011, 18:40   #18
Registered User

Join Date: Jun 2006
Boat: CT54
Posts: 358
Images: 3
Re: collision avoidance in Mexico :AIS or radar or ?

The outside of the Baja can get fog and we have personally ran into quite a bit of it going both up and down that coast. We have been so socked in by fog on the outside of the Baja that we would basically be blind if not for our radar. I would definitely suggest you go with radar over AIS if it must be one or the other.
Jackie
__________________
jackiepitts is offline   Reply With Quote
Old 06-09-2011, 18:56   #19
Registered User

Join Date: Jun 2007
Location: SW Florida
Boat: FP Belize, 43' - Dot Dun
Posts: 3,432
Re: collision avoidance in Mexico :AIS or radar or ?

A good radar will pick up any boat within a mile, the bigger they are the further you can see them. I use radar to pick out channel markers at night. AIS is a good tool and supplement to radar, but it will only show <1% of the vessels out there.
__________________
DotDun is offline   Reply With Quote
Old 06-09-2011, 19:30   #20
Registered User

Join Date: Dec 2009
Posts: 3,016
Images: 4
Re: collision avoidance in Mexico :AIS or radar or ?

I agree that AIS will be almost useless off Baja and in the Sea of Cortez. Like said above: 99% of the dangerous traffic does not have AIS. West of Baja the only big ships I've seen in many transits are (1) cruise ships, which keep a very good watch and turn to avoid everything; and (2) the big orange fuel tankers. Both transit directly from cape-to-cape so their tracks are easy to guess; and (3) ship and barge traffic in the vicinity of the Isla Cedros salt works. The salt goes to asia, so you can plot that track too.

In the Sea its the trawlers that you want to watch for...mainly because they have the shrimp you need for the BBQ
__________________
daddle is offline   Reply With Quote
Old 06-09-2011, 19:38   #21
cat herder, extreme blacksheep
 
zeehag's Avatar

Cruisers Forum Supporter

Join Date: Jul 2008
Location: furycame alley , tropics, mexico for now
Boat: 1976 FORMOSA yankee clipper 41
Posts: 17,777
Images: 56
Send a message via Yahoo to zeehag Send a message via Skype™ to zeehag
Re: collision avoidance in Mexico :AIS or radar or ?

some of the salt from cedros goes to mainland mexico.......and other places. the barge goes between cedros island and mainland mexico and is easy to see. empty barges come back, and they are easy to see. we drifted more than 36 hours just about 3-5 mi off cedros waiting for wind to push us into the village.....
zeehag is offline   Reply With Quote
Old 06-09-2011, 19:38   #22
Registered User

Join Date: Apr 2011
Location: Hood River Or
Boat: Boereal 44
Posts: 189
Re: collision avoidance in Mexico :AIS or radar or ?

If you can afford both do it. As close as I have ever come to killing the family was just after leaving Los Mertos at 3 AM. Once around the point and moving into shipping channel for ships going north we had severe thunder storms come from the west and from over the mountains. Radar did little but did spot a ship at times 12 miles out headed north we contacted freighter and they told us they were running up the middle of the channel. I thought I was way out of the way as we had made it across. Fifteen minutes later in zero vis and radar in a whiteout we hear the engine and then brightness in the heavy rain. Ship coming right at us and we just make a hard 180, I had to look up to watch ship go by maybe 100 yards off stern after making turn. I still shake from that experience, soon after I took the bus to San Diego and bought AIS. I had been very vocal how foolish AIS was until that happened. AIS did us well many times after that. Be safe get it.
__________________
stevewrye is offline   Reply With Quote
Old 06-09-2011, 21:27   #23
Registered User
 
zeta's Avatar

Join Date: Dec 2010
Location: Murrells Inlet, SC
Boat: mt34dt
Posts: 308
Re: Collision Avoidance in Mexico: AIS or Radar or ?

http://www.cruisersforum.com/forums/...ome-67640.html
__________________
zeta is offline   Reply With Quote
Old 06-09-2011, 21:51   #24
Registered User
 
SayGudday's Avatar

Join Date: Dec 2010
Location: San Diego, California
Boat: Pearson Triton 28 (1960)
Posts: 180
Re: Collision Avoidance in Mexico: AIS or Radar or ?

Gudday Kyle,

Did you say 20 miles out side of the shipping lanes with few lights?............Thanks....anyone want to buy a boat? I'm taking up skateboarding.
__________________
SayGudday is offline   Reply With Quote
Old 07-09-2011, 00:38   #25
Moderator
 
noelex 77's Avatar

Cruisers Forum Supporter

Join Date: Jul 2007
Location: Living on dirt waiting for our new yacht to be built.
Boat: Half built Bestevaer.
Posts: 10,619
Re: Collision Avoidance in Mexico: AIS or Radar or ?

Those that know the area seem to be recommending Radar.
Make sure you have the electrical capacity to run it. You may find you need to make some upgrades in solar capacity etc to run radar for collision avoidance where it needs to on or at on standby or timed transmit, for long periods of time.
Some of the new instant on broadband radars may be a better option (I have no experience with these), but you still have to run a display.

Conventional Radar is likely to need about 3Amps even with the power savings tricks employed.

A review of your electrical budget would be sensible before committing.
__________________
noelex 77 is offline   Reply With Quote
Old 08-09-2011, 09:34   #26
Registered User

Join Date: Jan 2010
Location: Dana Point CA
Boat: Ericson 27
Posts: 16
Re: Collision Avoidance in Mexico: AIS or Radar or ?

thanks everyone for your insights. It sounds that things are as i suspected. no perfect or easy answers. (of course there never is, which keeps life very exciting most of the time!

Zeta, thanks for the lead on that used radar gear, I am in communication with the guy. it is still available and i am invesigating whether my electrical can support it.

cheers and fair winds to all
kyle
__________________
no_bad_days is offline   Reply With Quote
Old 08-09-2011, 09:43   #27
cat herder, extreme blacksheep
 
zeehag's Avatar

Cruisers Forum Supporter

Join Date: Jul 2008
Location: furycame alley , tropics, mexico for now
Boat: 1976 FORMOSA yankee clipper 41
Posts: 17,777
Images: 56
Send a message via Yahoo to zeehag Send a message via Skype™ to zeehag
Re: Collision Avoidance in Mexico: AIS or Radar or ?

no bad days---i truly did find eyeballs to be the best protection from collision-- we did come close to a few pangas fishing off mazatlan, but nothing--NOTHING between ensenada and mazatlan was even near us. we watched the tugs with towed barges leave and enter the saltplant at cedros, we entered cedros village, we entered cabo san lucas and mazatlan using our eyeballs as our safety factor- i do have radar--- i will have ais whenever i finish installing my garmin gps, as it has that feature, and i wont be using either much. i rely on eyes to catch the lil things that show up in front or anywhere within a wide radius of my ketch.
zeehag is offline   Reply With Quote
Old 19-09-2011, 16:40   #28
Registered User

Join Date: Sep 2011
Location: Los Angeles
Boat: Broward, 108'
Posts: 15
Send a message via Skype™ to Lotustrbo
Re: Collision Avoidance in Mexico: AIS or Radar or ?

I had dual radar and found them invaluable on my runs in Alaska down the coast to Mexico. Never had a close call and lost of night time running as well as running in heavy fog not to mention through storms. As noted above it was a little more tricky during a storm but it was clear when there was an object vs just waves or rain.
__________________

__________________
LotusTrbo
Lotustrbo is offline   Reply With Quote
Reply

Tags
ais, collision, Mexico, radar

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
Problem with AIS taku OpenCPN 4 03-10-2014 10:17
New SiiTech AIS Reporting System For Yachts sinbad7 Marine Electronics 36 05-08-2011 07:51
Route Properties, Missing Functions James Baines OpenCPN 13 13-07-2011 05:31
AIS Reception Issue twistedtree Marine Electronics 72 03-07-2011 04:57



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 19:01.


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.