Streamer Depth Control Birds

Science Center Objects

The Geospace Navigator bird is a streamer depth control device, used with a high-resolution seismic system to regulate and record the depth of the streamer.

Photograph of a long, skinny, metal instrument with fins, and its float of the same length, being attached to a thick cable.

Streamer with depth control bird and its float attached.

Description

The Geospace Navigator bird is a streamer depth control device that can be used to regulate and record the depth of the streamer. They have a depth accuracy of +/- 0.15 m and are used with a bird float.

Specifications

  • Manufacturer: Geospace Technologies
  • Model: Navigator Bird
  • Weight: 5 lbs in water
  • Dimensions: 42 inches long x 30.4 inch wingspan
  • Power Requirements: Lithium batteries

Operational Characteristics

  • Minimum Operational Depth:
  • Maximum Operational Depth: 35 m
  • Limitations: Require lithium batteries which may be difficult to ship

Can only be used on streamer sections with a bird coil

Additional Equipment required

  • Birds mount on the streamer using collars.  These collars must be attached next to the location of the bird coil.
  • They can be used in conjunction with a float tube that provides additional positive buoyancy
  • A controller PC running the depth control software

Complementary Systems

Used in conjunction with a streamer and a marine seismic sound source.

 

People wearing safety gear standing on a ship and setting up gear.

Attaching the bird float to the streamer.

People wearing safety gear standing on a ship and setting up gear.

Attaching the depth-control bird to the streamer.

 

People wearing safety gear standing on a ship and setting up gear.

Ready to deploy!