mounted on vertical steel pipes (8 cm diameters) that had been driven 

 into the harbour bottom. The depth of submergence of the transducers 

 was approximately 1.06 m below International Great Lakes Datum (IGLD). 

 The depth of water at the seaward transducer locations was 7.2 m below 

 IGLD, and 6.6 m below IGLD at the leeward locations. During the course 

 of the study, the mean water level varied from 35 to 70 cm above IGLD. 



The pressure transducers were calibrated in a static test in 

 the NWRI Calibration Lab. Changes between pre- and post-season calibra- 

 tions were less than one percent. 



It was intended to measure the mean incident wave direction 

 using the two seaward transducers as done by Bruno et al . (1980). 

 However, the separation between the two transducers as installed in the 

 field was 6.4 m, and this was much larger than the specified separation 

 of 3.5 m. Accordingly, the directional results suffered from spatial 

 aliasing and were not used. 



Mooring loads were measured with two electronic load cells 

 (manufactured by Sensotec Inc.) and four mechanical "scratch" gauges. 

 The centre mooring line on the seaward side was equipped with a 4p00-lb 

 (17,800-N) electronic load cell, mounted on the chain mooring line about 

 2 m below the mean water level. The northwest corner mooring line was 

 equipped with a 2^00-lb (11^00-N) electronic load cell, mounted about 

 2 m below mean water level. The water depths at the two locations were 

 approximately 6.7 and 3.1 m below IGLD, respectively. The ratio of the 

 length of mooring line to the water depth was measured to be approxi- 

 mately 4, except at the northwest corner where it was 5.4. A third 



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