QUEST Q341 Sea Trial Summary


  1. Stredulinsky, D.C.
Corporate Authors
Defence R&D Canada - Atlantic, Dartmouth NS (CAN)
This report presents a summary of the DRDC Q341 sea trial conducted on the Royal Canadian Navy research vessel CFAV Quest in December 2011 at a location 60 nm south of Halifax in Emerald Basin in approximately 200 m water depth. The trial consisted of running various seakeeping patterns and other ship operations within and around a field of four moored wave buoys, while measuring ship motion and measuring wave conditions using shipboard equipment. This included two WaMoS II wave radar systems connected to two different X-band navigational radar and two over-the-bow wave measuring systems. The main purpose of the trial was to gather data for validation of the sea surface elevation mapping capabilities of the wave radar for use in research on Real Time Wave Identification (RTWI). RTWI uses successive wave elevation maps to derive details of the wave field for identifying and forecasting, in the short term, when large waves will approach the ship and forecast the ship motion response to these waves. The trial also provided further testing of a procedure called Wave Data Fusion which has been developed to improve the wave height measurements of the wave radar. The procedure compares measured ship motion and predicted motion, calculated with the DRDC SHIPMO7 hydrodynamics code using the wave radar directional wave spectra as input. The ratio of measured to predicted RMS motion components is used to improve the significant wave height reported by the wave radar. This technical memo

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Report Number
DRDC-ATLANTIC-TM-2012-185 — Technical Memorandum
Date of publication
01 Sep 2012
Number of Pages
Electronic Document(PDF)

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