Cruisers Forum
 


Join CruisersForum Today

View Poll Results: Which digital navigation package do you use?
MaxSea 44 13.66%
Map Tech 31 9.63%
Captn. Jack 1 0.31%
Chersoft 1 0.31%
The Capn 33 10.25%
NaviGator 3 0.93%
Nobeltec 34 10.56%
EasyNav 0 0%
Visual Nav 2 0.62%
Chart View 4 1.24%
Offshore Navigator 19 5.90%
Visual Mariner 1 0.31%
RayTech 15 4.66%
Oziexplorer 7 2.17%
SevenC's 1 0.31%
NavPak Pro 7 2.17%
Raymarine 33 10.25%
SeaPro 3 0.93%
Waterworld 0 0%
I don't use any digital package, just paper charts and sextant or GPS 62 19.25%
C-map 59 18.32%
Fugawi Marine 29 9.01%
Multiple Choice Poll. Voters: 322. You may not vote on this poll

Reply
 
Thread Tools Rate Thread Display Modes
Old 17-11-2006, 12:57   #61
Moderator Emeritus
 
GordMay's Avatar

Join Date: Mar 2003
Location: Thunder Bay, Ontario - 48-29N x 89-20W
Boat: (Cruiser Living On Dirt)
Posts: 31,586
Images: 240
I've often* felt comfortable with "eyeball" piloting - reading the water depths.
*I have rarely been in murky water, where I couldn't see a thinfg.
__________________

__________________
Gord May
"If you didn't have the time or money to do it right in the first place, when will you get the time/$ to fix it?"



GordMay is offline   Reply With Quote
Old 17-11-2006, 15:32   #62
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:
I've often* felt comfortable with "eyeball" piloting - reading the water depths.
Actually a pretty reliable method in the places where the water is clear and it's sunny. In coral it's better than charts. Water color can be a good eye ball navigation tool.

Here on the Chesapeake where you can see the bottom they call it "land".
__________________

__________________
Paul Blais
s/v Bright Eyes Gozzard 36
37 15.7 N 76 28.9 W
Pblais is offline   Reply With Quote
Old 17-11-2006, 19:43   #63
Registered User
 
cat man do's Avatar

Join Date: Aug 2006
Location: Brisbane Australia [until the boats launched]
Boat: 50ft powercat, light,long and low powered
Posts: 4,409
Images: 36
I'm comfortable enough as well and you can see in those Google earth pics that there is a ton of space between the individual reef, but it would be pretty easy to get lost in there especially if you had to get out in the afternoon with the sun in your eyes.

Obviously why the edges onl ever get looked at.

This is why we want to go

http://www.kanimblacharters.net.au/boats.php

Dave
__________________
"Money can't buy you happiness but it can buy you a yacht large enough to pull up right alongside it"...............David Lee Roth
Long Distance Motorboat Cruising It Is Possible on a Small Budget
cat man do is offline   Reply With Quote
Old 17-11-2006, 20:24   #64
Registered User

Join Date: Sep 2006
Posts: 112
I remember a story in Cruising World a while back about a guy using a GPS,depth finder and a jet ski in the Bahamas to make accurate charts of the reefs in the Bahamas where the standard fare is not as good as your eyes. This was a commercial venture IIRC and expected at the time to be successful. Perhaps a new venture for you?
__________________
yotphix is offline   Reply With Quote
Old 17-11-2006, 20:42   #65
Registered User
 
cat man do's Avatar

Join Date: Aug 2006
Location: Brisbane Australia [until the boats launched]
Boat: 50ft powercat, light,long and low powered
Posts: 4,409
Images: 36
Someone had done a hand drawn chart of atolls around the edges years ago using similar method, but it appears that we can't get them anymore as the guy has died and no one stocks them anymore.

Wish i'd grabbed 'em 5 years ago when I first heard of them.

Dave
__________________
"Money can't buy you happiness but it can buy you a yacht large enough to pull up right alongside it"...............David Lee Roth
Long Distance Motorboat Cruising It Is Possible on a Small Budget
cat man do is offline   Reply With Quote
Old 18-11-2006, 01:54   #66
Moderator Emeritus
 
GordMay's Avatar

Join Date: Mar 2003
Location: Thunder Bay, Ontario - 48-29N x 89-20W
Boat: (Cruiser Living On Dirt)
Posts: 31,586
Images: 240
Quote:
Originally Posted by Pblais
... Here on the Chesapeake where you can see the bottom they call "land".
Nice turn of phrase not only humourous, but accurate - the same would apply to Lk. Superior.
__________________
Gord May
"If you didn't have the time or money to do it right in the first place, when will you get the time/$ to fix it?"



GordMay is offline   Reply With Quote
Old 18-11-2006, 08:38   #67
Registered User
 
Tnflakbait's Avatar

Join Date: Apr 2006
Location: Southern California
Boat: CSK, 33' Aita Pe'ape'a
Posts: 338
Images: 7
Talking Oziexplorer

Oziexplorer is really cheap (about 90$) and it works great. download it from their website.
__________________
Tnflakbait is offline   Reply With Quote
Old 18-11-2006, 16:59   #68
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:
the same would apply to Lk. Superior.
For exactly the same but opposite reason. Here we have no depth but the water is muddy and on Lk. Superior there is a surpluss of depth so you never do see bottom that often. My favoite Great Lake for sure. Spent a lot of time on the MN North shore but never sailed there.
__________________
Paul Blais
s/v Bright Eyes Gozzard 36
37 15.7 N 76 28.9 W
Pblais is offline   Reply With Quote
Old 15-12-2006, 06:23   #69
Registered User
 
cat man do's Avatar

Join Date: Aug 2006
Location: Brisbane Australia [until the boats launched]
Boat: 50ft powercat, light,long and low powered
Posts: 4,409
Images: 36
Sick of seeing Pauls name come up on this Ghost Post with no actual post

Maybe now I won't look at it every day thinking there is an answer to my problems.

All you Wallys that keep voting yet not posting, don't be shy.......... we're nice guy's , really we are, say something pleeeaase.

Dave
__________________
"Money can't buy you happiness but it can buy you a yacht large enough to pull up right alongside it"...............David Lee Roth
Long Distance Motorboat Cruising It Is Possible on a Small Budget
cat man do is offline   Reply With Quote
Old 03-01-2007, 17:44   #70
Registered User
 
beau's Avatar

Join Date: Dec 2006
Location: Brisbane Australia
Posts: 757
Images: 1
which Navagation program do you use

Dave,
I lived in Cairns and Townsville for many years. We had no GPS in those days. It was doubtfull whether we ever found the same fishing spot twice.

What we did, was charter a light plane on a good day (no cloud) with a low tide over the reef.
We would take lots of photos of the reefs we were trying to fish from.

Getting into the reef is not aways a big problem but getting out can be difficult if cloud comes over and makes visibility difficult. A shallow draft is essential. (multihull).
One thing we did find is that the best fishing is usually on the outside edge of the reef.
What about Gbrmpa (Great Barrier Reef marine park authority) based in Townsville. They must have good aerial photos.
__________________
beau is offline   Reply With Quote
Old 06-01-2007, 05:18   #71
Registered User

Join Date: Jan 2007
Location: Australia
Boat: SV Outhere - custom built 60' steel cat.
Posts: 9
Hi all, finally joined so I can join in...
I use Digiboat. Love the C-Map charts, and SOB is fast, easy and seems to always have more features/abilities than I ask it for!

Dave,
If I've done it right, here are screenshots from c-map/sob for your area (lat/lng on the statusbar, lower-left corner will indicate the are shown, also I reduced colours to 256 for GIF file, so some colours may be different, but the detail is the same, the overview shot shows borders around areas with more detailed charts):
__________________
Ben Goodwin is offline   Reply With Quote
Old 06-01-2007, 05:24   #72
Registered User

Join Date: Jan 2007
Location: Australia
Boat: SV Outhere - custom built 60' steel cat.
Posts: 9
cmap images of QLD reefs

Dave,
Pasting them obviously didn't work...
This time I tried attaching.

Hope this works.
BGood
Attached Thumbnails
Click image for larger version

Name:	cmap1.gif
Views:	133
Size:	65.6 KB
ID:	740   Click image for larger version

Name:	cmap2.gif
Views:	112
Size:	69.3 KB
ID:	741  

Click image for larger version

Name:	cmap3.gif
Views:	111
Size:	81.3 KB
ID:	742   Click image for larger version

Name:	cmap4.gif
Views:	137
Size:	85.2 KB
ID:	743  

__________________
Ben Goodwin is offline   Reply With Quote
Old 06-01-2007, 15:52   #73
Registered User
 
cat man do's Avatar

Join Date: Aug 2006
Location: Brisbane Australia [until the boats launched]
Boat: 50ft powercat, light,long and low powered
Posts: 4,409
Images: 36
Thanks for that Ben, they work quite well, especially around Fred's and Saumaurez.

Can the same detail be achieved in the Swains area or is that as good as it gets, and if it is, how big would your boat image look on the chart.

Just tring to get an idea as to whether you could use it for getting out in the dark if you had to if say you were in behind Horsehoe reef for the night and a dark N/Westerly picked up.

Beau, don't know if grumpa have pic's or not, but would prefere not to use that method in this day and age, or this size boat that far offshore.

I don't feel quite that adventurous.

Dave
__________________
"Money can't buy you happiness but it can buy you a yacht large enough to pull up right alongside it"...............David Lee Roth
Long Distance Motorboat Cruising It Is Possible on a Small Budget
cat man do is offline   Reply With Quote
Old 06-01-2007, 17:18   #74
Registered User

Join Date: Jan 2007
Location: Australia
Boat: SV Outhere - custom built 60' steel cat.
Posts: 9
Dave,

I'll get another screenshot as soon as Norton gives me back my computer. Its Sunday morning virus scan is taking far longer than usual today! Necessary evil I guess - but the only reason I use it is because its acronym is NAV!

Ben.
__________________
Ben Goodwin is offline   Reply With Quote
Old 06-01-2007, 18:02   #75
Registered User

Join Date: Jan 2007
Location: Australia
Boat: SV Outhere - custom built 60' steel cat.
Posts: 9
More cmap images of QLD reefs

Dave,

I've blown-up Horseshoe reef - not quite enough to show the ship scaled shape, so I put a 500m marker on it for reference. I'd say this is not really enough detailed for safe navigating, but while you're there you can of course place your own chart marks showing depths, obstructions etc.

The other two images give an idea that if any area is surveyed at more detail, it will be shown (Hydrographer's Channel). The final image shows this in overview with the detailed area's borders clearly showing what's available.
The final pic is a perspective view (with a NE marker line) which also gives an overview of the area with borders around those places with more detailed coverage.

I should say that the chart I've got for this area is a few years old, it's an NT+ chart, not the newer MAX chart. I do know that a lot of the QLD areas have better detail in newer C-Map MAX charts - but I don't know if it is better in your area of interest???

Hope this helps!
Ben.
Attached Thumbnails
Click image for larger version

Name:	cmap5.gif
Views:	110
Size:	56.1 KB
ID:	747   Click image for larger version

Name:	cmap6.gif
Views:	94
Size:	71.1 KB
ID:	748  

Click image for larger version

Name:	cmap7.gif
Views:	96
Size:	50.5 KB
ID:	749   Click image for larger version

Name:	cmap8.gif
Views:	103
Size:	85.9 KB
ID:	750  

__________________

__________________
Ben Goodwin is offline   Reply With Quote
Reply

Tags
navigation

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
EU Detax Program Palarran Dollars & Cents 16 26-03-2009 08:07
Ugrib wind program skipgundlach Marine Electronics 1 08-12-2008 20:11
What nav. program? Shark Navigation 14 07-03-2007 09:21
S.O.B. program windthief Navigation 0 04-10-2005 23:00



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 07:02.


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.