B - Operations – Transporting – 63 – B
Patent
B - Operations, Transporting
63
B
114/58.9
B63B 22/16 (2006.01) B63G 8/42 (2006.01) G01V 1/38 (2006.01)
Patent
CA 1238532
ABSTRACT OF THE DISCLOSURE A float for use in seismic surveys of the seabed supports a plurality of seismic pulse transmitters which are suspended on lines beneath the float. At a distance from the front end of the float, on one sidewall thereof, a fastening device for a towing cable and a lean-in for control lines and lines for supplying operating medium to the pulse transmitters are provided. These lines and cables are gathered in a common line which extends behind the tow ship. The line, at a dis- tance away from the float, is connected to a line which leads to a length-regulating device inside the front section of the float. The float is also provided with at least one motor with a drive shaft leading to hoisting drums for the lines to the respective seismic pulse transmitters. Both the motors and the seismic pulse transmitters are connected to the pneu- matic supply line. The control lines lead to control devices at the separate components, permitting active steering of the system from on board the ship. Alternatively, the line can be connected to the front of the float and line can be connected about midway to the rear of the float. The motors can also be electrically powered, if desired.
470650
Dragsund Inge
Gjestrum Einar
Geophysical Company Of Norway A.s.
Marks & Clerk
LandOfFree
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