Hurricane
Well-Known Member
Most will know that I a great fan of OpenCPN
A few days ago, I had another look at my database of charts and thought I would revisit Google Maps as a source of data.
I've used Google Maps in the past before OpenCPN became as good as it is today.
In those days, I used Memory Map which didn't have any chart quilting built in.
So, I thought that OpenCPN's ability to "quilt" charts might make Google Maps images work differently.
Also, there are now much better Google aerial photos and better systems to "grab the data".
Also Google Maps provide good positioning data making georeferencing easier and much more accurate.
So, I've concentrated on Ibiza for our late season cruise.
I will probably do some for the Costa Brava for our summer cruise as well.
Before anyone comments, I don't intend using these charts for navigation.
But I think they might be a great planning tool and once within an anchorage, might help to identify the rocky areas of a bay.
Anyway, here are a few screen dumps that you might find interesting.
First a wide area view of San Antonio - note the low resolution image that covers the whole of Ibiza and the individual hi resolution areas covering the bays.
The purple line is a previous track of ours from 2010 - the track goes, exactly, to the berth that we were in.
This one is of Portinatx - showing the quilting - again, the purple line is where we were anchored.
On that ocasion, we arrived and anchored in one place - then moved - then left from the other position
During the move, the PC software wasn't running.
Finally, this is a zoomed in view - I think this will be useful when selecting an anchorage.
A few days ago, I had another look at my database of charts and thought I would revisit Google Maps as a source of data.
I've used Google Maps in the past before OpenCPN became as good as it is today.
In those days, I used Memory Map which didn't have any chart quilting built in.
So, I thought that OpenCPN's ability to "quilt" charts might make Google Maps images work differently.
Also, there are now much better Google aerial photos and better systems to "grab the data".
Also Google Maps provide good positioning data making georeferencing easier and much more accurate.
So, I've concentrated on Ibiza for our late season cruise.
I will probably do some for the Costa Brava for our summer cruise as well.
Before anyone comments, I don't intend using these charts for navigation.
But I think they might be a great planning tool and once within an anchorage, might help to identify the rocky areas of a bay.
Anyway, here are a few screen dumps that you might find interesting.
First a wide area view of San Antonio - note the low resolution image that covers the whole of Ibiza and the individual hi resolution areas covering the bays.
The purple line is a previous track of ours from 2010 - the track goes, exactly, to the berth that we were in.
This one is of Portinatx - showing the quilting - again, the purple line is where we were anchored.
On that ocasion, we arrived and anchored in one place - then moved - then left from the other position
During the move, the PC software wasn't running.
Finally, this is a zoomed in view - I think this will be useful when selecting an anchorage.
Last edited: