Reply
 
Thread Tools Search this Thread
 
Old 31 August 2006, 03:30   #1
Member
 
Country: UK - England
Town: Maidenhead
Boat name: titian109
Make: Osprey
Length: 5m +
Engine: suzuki 100hp
MMSI: 235039033
Join Date: Jun 2006
Posts: 8
Gps

I was out last weekend playing with the boat getting use to the sonar and gps etc . So I thought I know I'll have a search for a mark/wreck.
So I checked my Gps , set the correct datum and input the details.
When i arrived there was 3 diving boats in the close area so I knew I was near . But could I find it with the sonar , no i could not , so off I went with my tail between my legs.
Question I am using a Garmin 125 GPS .Is it worth paying for the DGPS to gain accuracy or a new "wass" enabled unit ( if this is on in the uk yet seems to be a subject on its own) or do I just need more pratice......
__________________

__________________
luckybob99 is offline   Reply With Quote
Old 31 August 2006, 04:19   #2
Member
 
Pete7's Avatar
 
Country: UK - England
Town: Gosport
Boat name: April Lass
Make: Moody 31
Length: 9m +
Join Date: Aug 2001
Posts: 4,850
The quality of the echo sounder might be the issue rather than the GPS. I prefer Lowrance because they are quite powerful and will often pick up details of a wreck that some of the other makes won't find, an that includes the cheaper Eagle and Garmin ranges. If there were 3 other dive boats in the area then your in the right place and the GPS is working but it can be diffcult to pick out a definate man made shape of a wreck from other underwater objects. A square or petal shape search of the area would normally find a wreck but its a lot quicker with several other boats.


Pete
__________________

__________________
.
Ribnet is best viewed on a computer of some sort
Pete7 is offline   Reply With Quote
Old 31 August 2006, 06:50   #3
Member
 
Simon B's Avatar
 
Country: UK - England
Town: Leicester
Boat name: Vixen
Make: Ribcraft
Length: 6m +
Engine: Suzuki OB 175
MMSI: 235071839
Join Date: Jun 2004
Posts: 1,621
Dont lose heart, it isnt easy finding wrecks. If your sounder doesnt have auto zoom or bottom lock or 2 or 4 times zoom on a 30metre reading you are looking for a small change in the height of the reading.

Also your other settings can have a great bearing on how sensitive your sounder appears. Noise or clutter reduction and transducer position again will impact it. It took us a while to get ours et up to optimum (Lowrance x107DF) DF helps alot as well, 50k transducer better for depth.
__________________
New boat is here, very happy!
Simon
www.luec.org
Simon B is offline   Reply With Quote
Old 31 August 2006, 10:11   #4
Member
 
Country: UK - England
Town: Maidenhead
Boat name: titian109
Make: Osprey
Length: 5m +
Engine: suzuki 100hp
MMSI: 235039033
Join Date: Jun 2006
Posts: 8
Thanks for the answers guys . Hope its not my sounder cos I have just replaced it .Its a lowrance x135 ....
__________________
luckybob99 is offline   Reply With Quote
Old 31 August 2006, 12:05   #5
Member
 
Country: USA
Town: Oakland CA
Length: 3m +
Join Date: Feb 2005
Posts: 6,653
I've found that unless you have about 8-10' of relief, or the structure you're looking for is really big, it's nearly impossible to locate on sonar without running a lengthy pattern and paying *really* close attention to the sonar screen.

To see the object, you have to cruise directly over it at a speed which will show you the difference between the normal bottom and the top of the structure. Harder to do than it sounds.

When diving, I go by the GPS (with WAAS corrections, usually) for known sites, and use the sonar for finding new structure, or things like the edges of pinnacles and such (i.e. an anchoring aid.)

Hope this helps;

jky
__________________
jyasaki is offline   Reply With Quote
Old 31 August 2006, 13:33   #6
Member
 
Country: UK - England
Town: Maidenhead
Boat name: titian109
Make: Osprey
Length: 5m +
Engine: suzuki 100hp
MMSI: 235039033
Join Date: Jun 2006
Posts: 8
so I got to ask this outright is waas working in the UK yet ??
__________________
luckybob99 is offline   Reply With Quote
Old 31 August 2006, 14:06   #7
RIBnet admin team
 
Poly's Avatar
 
Country: UK - Scotland
Boat name: imposter
Make: FunYak
Length: 3m +
Engine: 2 stroke YAM 20 HP
MMSI: 235089819
Join Date: Sep 2005
Posts: 10,114
Quote:
Originally Posted by luckybob99
so I got to ask this outright is waas working in the UK yet ??
Yes, although it is more correctly called EGNOS in europe - been "officially live" since July 06 (although I think it was working most of the time a while before then).
__________________
Poly is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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





Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -5. The time now is 18:33.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.