Author Topic: scan at 800khz, the souk on river  (Read 5302 times)

0 Members and 1 Guest are viewing this topic.

Offline abraquelebout

  • volunteer rescue diver, surfer, publicist, submarine archaeology
  • Sr. Member
  • ****
  • Joined: Apr 2010
  • Location: france
  • Posts: 270
  • Unit(s): 898, 1198, helix G2
  • Software: deep,,drdepht,reef.
  • Accessories: towfish lowbird /LSS2-hdsi, 60mcable
scan at 800khz, the souk on river
« on: October 25, 2010, 07:56:57 AM »
hi, i dive in point find whit towfish on river at 10 m depht 8)
it's the "souk", 3 wreek in 20 m, middle aged wreek, roman column and 16 e siecle potery
a exemple of survey for archeology
yes towfish is workink weel!!!!


Offline Rickard

  • Hero Member
  • *****
  • Joined: May 2009
  • Location: Mariefred, Sweden
  • Posts: 512
  • Unit(s): 999, 981, M37, LowBird-1, LowBird-2
Re: scan at 800khz, the souk on river
« Reply #1 on: October 25, 2010, 09:19:27 AM »
Beatiful and thrilling!

It's very interesting to see the range you get at 800 kHz. I would have predicted much shorter range at that frequency and with that length of cable. I assume you used the long towfish cable?

Rickard

Offline Jolly Roger

  • Hero Member
  • *****
  • Joined: Mar 2009
  • Location: Germany, Lake Constance
  • Posts: 804
  • HB Addicted
  • Unit(s): HELIX 9 G3N, 998Cx SI, 959DI
  • Software: latest (mostly)
  • Accessories: AS GR50, custom towfish and: A boat!!
Re: scan at 800khz, the souk on river
« Reply #2 on: October 25, 2010, 01:48:10 PM »
Souk?

Are you refferring to the word "market" in arabic? That's what it looks like: A market under water with all sort of stuff to show. Very interesting!

I couldn't go diving today. Nose and throat were closed and the weather was also bad. Next year is another season....

Regards / Harry
YES,......
WE SCAN!

Offline abraquelebout

  • volunteer rescue diver, surfer, publicist, submarine archaeology
  • Sr. Member
  • ****
  • Joined: Apr 2010
  • Location: france
  • Posts: 270
  • Unit(s): 898, 1198, helix G2
  • Software: deep,,drdepht,reef.
  • Accessories: towfish lowbird /LSS2-hdsi, 60mcable
Re: scan at 800khz, the souk on river
« Reply #3 on: October 25, 2010, 04:45:49 PM »
yes, i use the towfish with 60 m cable.
at 2 or 3 m i take 5 depht under  transducer range (15 m)in 800 khz, and at 3 or 4 meter  10 depht in 455 khz (30 or 40 m range). Picture under 3 meter in 455 seen over exposed
now i begin to make another towfish in composite (carbon and epoxy fiber)
next satuday i want to dive on another point find with the sonar.
i think there's an anciant wreeck ...
there's no visibility for foto, just 1 meter max.
it's the adventure !!! :D


Share me

Digg  Facebook  SlashDot  Delicious  Technorati  Twitter  Google  Yahoo

 

Related Topics

  Subject / Started by Replies Last post
16 Replies
11338 Views
Last post September 19, 2013, 09:34:28 AM
by Rickard
0 Replies
4096 Views
Last post February 02, 2014, 09:59:45 PM
by Dieago
68 Replies
43714 Views
Last post December 01, 2014, 10:06:07 PM
by sfw1960
4 Replies
4142 Views
Last post September 24, 2014, 06:38:37 AM
by bgump24
19 Replies
17640 Views
Last post December 29, 2015, 12:04:30 AM
by sfw1960
5 Replies
4338 Views
Last post June 10, 2015, 01:05:26 PM
by Bob B
2 Replies
2761 Views
Last post November 12, 2015, 06:34:58 AM
by JoeyWelch
2 Replies
3924 Views
Last post May 05, 2016, 02:50:04 PM
by lock1nout


SimplePortal 2.3.3 © 2008-2010, SimplePortal