tome
Well-Known Member
So what's going on here then?
And here
And here
What is it?
- Thread starter tome
- Start date
Cutter
Well-Known Member
setting up an explosion or whatever you do to 'ping' the bed and catch signal round other side of world?
or new version of mutiny on the Amaya with Capt Bightome being cast adrift on a Lanbuoy??
or new version of mutiny on the Amaya with Capt Bightome being cast adrift on a Lanbuoy??
Dyflin
Well-Known Member
Not a buoy 'cause it has a bow and so is designed to be towed in one direction. Radar refelector and nice bright colour to be seen by human and machine. Going on your last pictures and that type of work...
Target practice for fishing boats? /forums/images/graemlins/wink.gif
Target practice for fishing boats? /forums/images/graemlins/wink.gif
ParaHandy
Well-Known Member
erm .. hoo many men does it take to change a light bulb? ...
or
after several months at sea, the Nautilus surfaces and Julie is seen avoiding the attentions of Capt Nemo ...
or
after several months at sea, the Nautilus surfaces and Julie is seen avoiding the attentions of Capt Nemo ...
StugeronSteve
Well-Known Member
With the skies becoming increasingly congested Santa adapts his sledge for surface navigation.
Sans Bateau
Well-Known Member
tomes's first boat was a home build. He was really pleased with it, achieving a good 5 knts even before he could get a sail up!
tome
Well-Known Member
[ QUOTE ]
Target practice for fishing boats?
[/ QUOTE ]
Very close to the truth!
Galadriel has the speed about right and Cutter is right in guessing it has something to do with seismic survey, but nothing to do with explosions
Target practice for fishing boats?
[/ QUOTE ]
Very close to the truth!
Galadriel has the speed about right and Cutter is right in guessing it has something to do with seismic survey, but nothing to do with explosions
Kilter
Well-Known Member
The preparations for Rocket Man's first sea launch were progressing!
Dyflin
Well-Known Member
I think your mates got competition...
Sans Bateau
Well-Known Member
This one is going faster, but he IS going down hill!
tome
Well-Known Member
We tried these little ones but they won't stay upright in a big sea. Our's were very stable and a capsize was rare even in a storm
G
Guest
Guest
End of Seismic cable float ..... changing batterys ? Repairing light ?
You really look happy there ......
You really look happy there ......
tome
Well-Known Member
Correct, changing out an antenna on a tailbuoy
For those who aren't familiar
The seismic streamers vary in length according to the depth of imaging were looking at. Normally we are at 3 - 4 km target depth so the streamers have to be twice this length to pick up the far reflections - typically 7 kilometres long. We deploy up to 12 streamers, and the end of each is marked by a tailbuoy as pictured which has gps and a transmitter to send positions back to the ship. The streamers are normally at around 6m depth so invisible, but connected to the tailbuoys via wires and a chain bridle
It never ceased to amuse me when we turned the ship around through 180 degrees that we would meet the tailbuoys coming past us in the opposite direction some half an hour after we'd made the turn. Be warned if you see these around that they are doing 5 knots and connected to a ship 5 miles away!
We wouldn't get away with having our immersion suits undone these days!
For those who aren't familiar
The seismic streamers vary in length according to the depth of imaging were looking at. Normally we are at 3 - 4 km target depth so the streamers have to be twice this length to pick up the far reflections - typically 7 kilometres long. We deploy up to 12 streamers, and the end of each is marked by a tailbuoy as pictured which has gps and a transmitter to send positions back to the ship. The streamers are normally at around 6m depth so invisible, but connected to the tailbuoys via wires and a chain bridle
It never ceased to amuse me when we turned the ship around through 180 degrees that we would meet the tailbuoys coming past us in the opposite direction some half an hour after we'd made the turn. Be warned if you see these around that they are doing 5 knots and connected to a ship 5 miles away!
We wouldn't get away with having our immersion suits undone these days!
iangrant
Well-Known Member
Thought you looked much younger in the photo - about 1962 that was?
Anyway don't listen to his techie stuff, it's a launch pad for Mrs Tomes' credit card.
cheers
ian
Anyway don't listen to his techie stuff, it's a launch pad for Mrs Tomes' credit card.
cheers
ian
G
Guest
Guest
Re: What is it? Things evolve ...
I can remember the old days .... I used to get roped into Horizontal sextant angle the buoy of the arse-end of the boat ... took a bloo*y good eye-piece on the sextant to see the thing !!
One time of Louisiana coast .... CGG - not Western !! ..... wqe had a buoy line severed ... and of course seismic cable was then de-pressured and brought to surface .... ready to haul on. Mission Chief asked me to call the support tug to get our buoy ... I was very annoyed and told him straight - WE GET OUR BUOY ... not some bl***y yank !! So "dark-room" boys were told to keep an eye on the cable and we turned and ran off to collect our "stray" ...
Now there's me thinking we might get some thanks ... as Tome knows ... the older system had Mariners like me and techies who knew jack-s*** about driving a boat ... Did anyone say thanks .......... Next time call the support boat !!
Oh and our standard length was 3.2 nm long cable with 3 starjet stream arrays ... whatever you did with that behind .... you'd struggle to get over 5kn anyway !!
I can remember the old days .... I used to get roped into Horizontal sextant angle the buoy of the arse-end of the boat ... took a bloo*y good eye-piece on the sextant to see the thing !!
One time of Louisiana coast .... CGG - not Western !! ..... wqe had a buoy line severed ... and of course seismic cable was then de-pressured and brought to surface .... ready to haul on. Mission Chief asked me to call the support tug to get our buoy ... I was very annoyed and told him straight - WE GET OUR BUOY ... not some bl***y yank !! So "dark-room" boys were told to keep an eye on the cable and we turned and ran off to collect our "stray" ...
Now there's me thinking we might get some thanks ... as Tome knows ... the older system had Mariners like me and techies who knew jack-s*** about driving a boat ... Did anyone say thanks .......... Next time call the support boat !!
Oh and our standard length was 3.2 nm long cable with 3 starjet stream arrays ... whatever you did with that behind .... you'd struggle to get over 5kn anyway !!
Colin24
Well-Known Member
Immersion suite, what immersion suite?
Channel Ribs
Well-Known Member
[ QUOTE ]
...doing 5 knots and connected to a ship 5 miles away!
[/ QUOTE ]
Whats the drag on that lot!? Blimey
...doing 5 knots and connected to a ship 5 miles away!
[/ QUOTE ]
Whats the drag on that lot!? Blimey
Colin24
Well-Known Member
Not as much as you might expect. As I write it reads 1.8 metric tons.
tome
Well-Known Member
We reckon on 2 tonnes per streamer, 3 tonnes and you start to stress them and alarms go off
On top of that there's the deflectors which hold the gear out wide otherwise you'd have a tangle. Then there's the airgun arrays
Minimum bollard pull from one of our smaller ships 30 tonnes. That's equivalent to a mighty tug
On top of that there's the deflectors which hold the gear out wide otherwise you'd have a tangle. Then there's the airgun arrays
Minimum bollard pull from one of our smaller ships 30 tonnes. That's equivalent to a mighty tug
BrendanS
Well-Known Member
Tom, could you do a big write up on exactly what you do, and how you do it. I'm interested, and I'm sure others would be. I gained a lot of knowledge about GPS chatting with you on the forums, and there is lot of other stuff you know that won't come out without specific questions. So go for the blurb factor.