Patent ID: 11874422
Assignee: SHEARWATER INVEST AS
Field: Measurement (Instruments)
Classification: CPC G  B | IPC B  G

Claim 4:
5. An apparatus and system for positioning marine seismic equipment when towed behind a vessel at sea, comprising
a pulley apparatus being a controllable running block,
connected with and supporting marine seismic equipment, wherein
the controllable running block (1) is configured to attach to a deflected lead wire (2) or a tow wire (9),
the controllable running block (1) has pulleys configured to attach to said deflected lead wire (2) or tow wire (9), and fixed to a wire (15) and a pulley system (16) connected to a motorized reel (38) on the vessel (4), for travel along the deflected lead wire (2) or tow wire (9), and
the controllable running block (1) having means for connecting to the marine seismic equipment (3, 3′).