Here's a few 3D shots of small areas mapped in the sea in Queensland, Australia. I tend to map small areas that I fish, with as much detail as possible, as opposed to creating big maps of lakes etc. (I rarely fish in fresh water). I find however much you think you know a mark, it's always quite illuminating to see exactly what is down there.

This one is a wide bar that continues out from a small island. When the tide is running, it rips over the bar and down in to the trough on the right (waypoint with fish icon), where the fish just line up (sometimes!).



This mark is in the same region. The map is only a couple of hundred of metres across, and the mark itself is in the middle of nowhere - a big expanse of 60 foot flat sand. This place almost always has a few fish on it and we are almost certain it is some kind of underground spring - you can see a kind of shallow channel running out from the hole.



This mark is known locally as a bommie, but its actually more of a finger of rock sticking out from a sandbank. I just put a single contour back onto my 997 that outlined the shape of it, so I can troll the edge.

Here's a 3D view from my collection. These 2 lumps are in a large area of flat sand with ribbon weed and regularly hold fish. My underwater video camera shows them as 2 rocks with lots of growth on them.

Another one showing a bank. Distance between the top 2 waypoints is about 75 metres.



The hand drawn cross with yellow highlighting, on the Reefmaster 3D view, is where the underwater image of the bank was taken. Water was not that clear, and image was taken from an underwater video, so quality isn't great.

Nice images Meggs - are you towing that camera behind the boat? It will also be very interesting to match up video images with the bottom-hardness data, when that update is released - it'll be a good test of whether the calculations are right or not :)

Matt

@Matt
Camera (GoPro Hero2) is used at whilst at anchor. The number of inquisitive fish that have to to be on video is amazing. I have a feeling that one day a large shark (we get some big ones in South Australia) will decide the camera is "lunch".

Agree - It will be interesting to do a drift (with the camera down) over reefy areas to test how the "actual" bottom compares to bottom hardness.

For bottom-hardess i will done pictures or movies of bottom during diving of the place i get data: rock, wreck, many kind of sand to make comparison.

Th first impression for me in 3D is, that the quality is much better as in DrDepth. Such brillant pictures require normally much effort even in proffesional GIS application.

fjordfisher

@fjordfisher
I totally agree with you.
Every Time i look at Reefmaster Stuff i think in the same.
.............
@Matt, maybe we cann combine this Thread with that one www.reefmaster.com.au/index.php/forum/ga...43-quick-shots-in-3d
I have not seen this thread as i created the other one.