Project number: 1978-044
Project Status:
Completed
Budget expenditure: $0.00
Organisation: NSW Department of Primary Industries
Project start/end date: 28 Dec 1979 - 31 Dec 1979
Contact:
FRDC

Objectives

1. Acquire and install a complete instrument package (a) to make simultaneous measurements of trawl door spread, wing spread & headline height of bottom & pelagic trawls used during survey work
2. to make similar measurements on commercial trawl gear

Final report

Author: T.B. Gorman K.J. Graham
Final Report • 1979-12-31 • 968.01 KB
1978-044-DLD.pdf

Summary

The objective of this report was to measure trawling gear with the Trawl Instrumentation System (TIS).

The method was similar to that described in Cruise Report no. 76. Each net and door combination was towed at various log speeds, and was maintained at each log speed for about 20 minutes while ground speeds were calculated using radar and/or satellite navigator fixes. When possible, reciprocal trawls were carried out in opposite directions.

No problems were encountered with the TIS and clear readings were obtained during all trawls.

Related research

Environment
People
Industry
PROJECT NUMBER • 2022-044
PROJECT STATUS:
CURRENT

Characterising the impacts of warm water and other stressors on the boom-and-bust cycle of the Commercial Scallop

1. Identify intrinsic stressors (e.g., surveying techniques (e.g., video vs dredge) and timing, location (e.g., east vs west) and timing of fishing, the use of tumblers, size limits of scallops, etc.) and extrinsic stressors (e.g., temperature, food availability, etc.) commonly faced within the...
ORGANISATION:
Institute for Marine and Antarctic Studies (IMAS) Hobart