Humminbird 997c si

[adrianevo]

Hi Henrik and all.
We went for our first season offshore dive yesterday!
The sea was freezing at 5c and the vis 0,but still a good wreck dive!
You can see from the picture near me on the right,a small dot on the shure line,yes that is the sea a mile down the beach!Makes interesting diving with a 15metre tidal difference.
Should have side image sonar soon,keep the images coming!
Cheers Adrian.

[Simon B]

Just seen this;

Sidescan Towfish System

[Diver]

Simon,

Towfish is hard to use.. that so wonderfull with the Hum, always in the water...

Here is scans from yesterdays trip to the Baltic.. 28 dives this year. Look at the log on the screencaptures, more than 1800 nm in 1 year..!!

1st one is an old wooden steamer, sank in 1886, 50m long, 2nd is new wreck we found. 18th og 19th century, large wooden wreck, only 1m above seafloor...

Adrian, perhabs You should get over here:-)!

Henrik

[Simon B]

Diver,

The waterproof laptop put me off a little bit as well.

[karlT]

Diver,

When you are looking for new wrecks, I assume you are seraching in an area where you have researched or have knowledge of a possible wreck?

When you start your search do you use the grid function on the hummindird and on what scale ie, 25m 50m grid squares. Or, do you use your garmin and just go up and down with spacing between runs until you find something. I find it quite difficult with the local currents to stick to the grid at slow speed as the boat (and sidescan) is often not pointing in the desired direction to achieve a decent search coverage.

Glad to hear you have had so many dives this year, Jersey which usually has great vis has been down to about 1m since start of the year and although I have managed to get in and replenish the freezer with scallops have not managed to get to any of our favourite wrecks.

Regards
KarlT

[Diver]

Hi Karl,

Well we usualy have very good positions from fishermen, where the wrecks is just on the spot. In those cases we find the wreck on the normal echo sounder in the garmin and use the scanner to determine if its ok to dive (the are a lot of useless sunken newer fishingwessels and other towing barges, that we dont want to waste our time on).

I never use the gps function on the hum, so the sonar can use the whole screen, and the Garmin does it all when it gomes to gps. Never use grids or the like, I work in cirkles around the position, with distance between the "circles" as long as I believe the scanner covers or just in crossing throug in all directions where I "feel" the wreck could be:-)

It seems that all you guys have bad vis over there in the winter time? In the Baltic it never gets really bad, some times it can be really bad on the wreck, because of a lot of cods stir op the vis or a current sweeps throug the mud, but a few meters above its clears up. Our problem is that all wrecks is deco diving and the surface temp is 2-4 dregrees until May or so:-( and then in the summer it can be 2 degrees on the bottow and warm in the surface!

Henrik


Henrik

[adrianevo]

Hey henrik,
So what depths and times on deco? We can't dive deco with the tides but we don't
need to,theres not much over 30m,and those i do 32% nitrox so no deco.
Still havn't ordered hum yet,can't make my mind up on benefits of 1197 and my console is
13inch and 1197 is 13.1 but i could get around that.If you can't make your mind up
go Big!Maybe?

P.S. The Bass fishing is good here!

[Diver]

Hi Adrian,

We were out diving yesterday again. Totally 34 dives this year! 1 st dive was 40m (almost all the time, really worn down wooden wreck), 26min bottom time and 12 min deco (water is still 6 degrees!). Nitrox 27 and 80 % for deco. 2nd dive after 3 hours surface interval, 43m, 20 min bottom time and 12 min deco, same gasses. I dive with a Uwatec Smart tec computer.

Hmm.. Yeah, the 1197 is a bit wider than the 997.. But it should not be that bad, of course I dont know how your console look.. but if You can afford it, go for the 1197 and build the console up around it:-)

Do you ever find new wrecks over there?

Regards
Henrik