Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 09-01-2008, 12:12   #16
Moderator Emeritus
 
David M's Avatar

Cruisers Forum Supporter

Join Date: Sep 2007
Location: San Francisco Bay
Boat: research vessel
Posts: 10,150
You can buy wedges from the manufacturer that will get your sounder pointed close to straight down...or if you are creative you can make your own out of a durable plastic.

Transducers create a cone measured in degrees. If the cone is pointed towards the bottom then you will get a return. I ideally you want it pointed straight down because when the boat rolls you will maximize the amount of time the transducer is getting a return but you can get away with some angle to the transducer.

All boats that are not tiny little things need a sounder. It's just good seamanship and safer to have one. Many boats have two, they are so basic to safe navigation.
__________________

__________________
David

Life begins where land ends.
David M is offline   Reply With Quote
Old 09-01-2008, 19:06   #17
Moderator
 
Boracay's Avatar

Cruisers Forum Supporter

Join Date: Feb 2004
Location: Pelican Bay, Great Sandy National Park
Boat: Steel Roberts Offshore 44
Posts: 5,175
Images: 18
Should I use a secondhand ST30?

The boat came with a fairly ratty looking ST30 Bidata display (not installed).

I am assuming it will work with a ST40 depth transducer.

Should I use this or would I be better off going to a new ST40 Bidata or individual speed and depth displays?
__________________

__________________
Rust never sleeps
Boracay Blog.
Boracay is offline   Reply With Quote
Old 10-01-2008, 02:52   #18
Moderator Emeritus
 
Ex-Calif's Avatar

Cruisers Forum Supporter

Join Date: May 2007
Location: Singapore
Boat: Maxi 77 - Relax Lah!
Posts: 11,514
Images: 4
The first and only electronic instrument we have is depth. Having someone on the bow with a lead line sounds traditional. Apparently you can also still send communications to people on something called paper, that you stuff in an envelope and affix something called a stamp to, although I don't know why you would want to...

Sandy bottoms move - most charts are old. Many coastlines are not even surveyed that accurately.

Unless you plan a cruising life 12 miles off shore and running in with the dink, get depth...
__________________
Relax Lah! is For Sale <--- Click
Click--> Custom CF Google Search or CF Rules
You're gonna need a bigger boat... - Martin Brody
Ex-Calif is offline   Reply With Quote
Old 10-01-2008, 04:15   #19
Moderator Emeritus
 
Pblais's Avatar

Join Date: Mar 2003
Location: Hayes, VA
Boat: Gozzard 36
Posts: 8,700
Images: 15
Send a message via Skype™ to Pblais
Quote:
Should I use a secondhand ST30?
The boat came with a fairly ratty looking ST30 Bidata display (not installed).
Here is what I would assume. The old ST30 display used to work. When it no longer worked it was removed. I'm not think a PO would uninstall soething that worked. It may have been that the transducer quit but they didn't want or could not figure out which end was bad. I would not assume the transducer is still good or that the display still works.

If you buy an ST40 Bidata it comes with the transducer(s). If you bought a second hand ST30 bidata it still may not work and that is the more expensive part. A quick check on eBay didn't turn up any displays but the transducer is the same as the ST60 so if the transducer is good it may work but the cable may be different.
__________________
Paul Blais
s/v Bright Eyes Gozzard 36
37 15.7 N 76 28.9 W
Pblais is offline   Reply With Quote
Old 10-01-2008, 20:38   #20
Registered User
 
Steve Kidson's Avatar

Join Date: Jul 2005
Location: Sydney, Australia
Boat: Hartley 32 RORC; Vixen
Posts: 193
Images: 10
Depth Sounder

I am nearing completion of my re-fit and at same time have installed tranducers for depth and log.

I opted for Navman instruments and installation instructions for depth transducer included for the following:
Position ahead of keel
Position in an area not affected by turbulence/cavitation etc
Ideally pointing straight down; if not, no more than 15 degrees off centre.

I made (shaped to hull curvature) a wedge from cedar, epoxied to hull and faired area with an epoxy putty.

In my opinion, a depth sounder is a madatory piece of equipment for cruising. The old timers would not have left port without a lead line, our electronic age has replaced it with a transducer and display; use the technology.

Fair winds

Steve
__________________
Steve Kidson is offline   Reply With Quote
Old 10-01-2008, 22:16   #21
Registered User

Join Date: Oct 2007
Posts: 217
Related device

Along the lines of improvements in technology for the same purpose, has anyone actually worked with the Interphase arrayed sonar/fishfinder/depthsounder setup?

I'm very curious about whether it works as I've often thought about what would happen if you aimed a transducer slightly down and forward of the boat. Would the depth alarm actually work to let you know a few seconds before you struck something not visible from the surface?

seer
__________________
Seeratlas is offline   Reply With Quote
Old 10-01-2008, 22:53   #22
Long Range Cruiser
 
MarkJ's Avatar

Cruisers Forum Supporter

Join Date: Dec 2007
Location: Australian living on "Sea Life" currently in England.
Boat: Beneteau 393 "Sea Life"
Posts: 12,828
Images: 25
Quote:
Originally Posted by Seeratlas View Post
Interphase arrayed sonar/fishfinder/depthsounder setup?



seer
Anything that expensive I want
INTERPHASE SE200B SONAR ENGINE W/THRU HULL TRANSDUCER Price: US $2,499.00Sale price: $1,995.17

May I borrow a gun and the address of a bank?


Mark
__________________

__________________
MarkJ is offline   Reply With Quote
Reply

Tags
depth sounder, installation

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
Sonar Depth Sounder? paula Marine Electronics 3 29-08-2007 03:22
Depth Sounder Installation Steve Kidson Marine Electronics 1 12-06-2006 05:25
Depth Sounder Thru-Hull Alternative? markpj23 Marine Electronics 17 16-05-2006 23:34
Depth Sounder Troubleshooting exposure Construction, Maintenance & Refit 9 10-02-2004 15:47



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 16:13.


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.