Synopsis of Survey Data Collected During Q-260 MAPLE 2001 Sea-Trials with CFAV and NARV Alliance


  1. Trevorrow, M.V.
  2. Crawford, A.M.
  3. Fawcett, J.
  4. Kessell, R.
  5. Miller, T.
  6. and others
Corporate Authors
Defence Research Establishment Atlantic, Dartmouth NS (CAN)
This memorandum summarizes experimental survey results acquired by the DREA mine counter-measures group during a joint sea-trial with the SACLANT Undersea Research Center, La Spezia, Italy. DREA utilized its ship CFAV Quest while the NRV Alliance supported the SACLANTCEN effort. The trials were conducted July 1 - 20, 2001 at four sites near Halifax, Nova Scotia. Each of the sites was approximately 1 by 2 km in area, with water depths of 30 to 50 m, overtop of mixed muddy, sandy, or rocky seabeds. At each site, high-resolution sidescan sonar surveys from the Quest were combined with multi-beam site, high-resolutions sidescan sonar surveys from the Quest were combined with multi-beam swath bathymetric sonar surveys from the Alliance. The Quest successfully deployed a variety of inert mine shapes at two sites, and then collected high-resolution sidescan sonar imagery of these mines at a variety of ranges and incidence angles. This data will be used for developing and testing computer-aided detection and classification algorithms. At the same time Alliance focused its efforts on high-frequency seabed backscatter measurements, seabed stereo photography, and core samples. Both vessels collected echo-sounder and sub-bottom profiler data useful for evaluating seabed sediment classification schemes. Multiple deployments of new and existing free-falling sediment penetrometers were conducted.

Il y a un résumé en français ici.

Sonar images;Ocean bottom soils;Seabed mines;Acoustic sediment classification
Report Number
DREA-TM-2001-172 — Technical Memorandum
Date of publication
01 Nov 2001
Number of Pages
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