1.Pack ice concentration is expressed in:
2.The most dangerous ice hazard to detect by radar is:
3.Average ocean salinity is about:
4.Under the IMO Polar Code, a vessel operating in polar waters requires:
5.Sidescan sonar is primarily used to:
6.The most dangerous sea conditions associated with a strong current occur when:
7.A CATZOC rating of D indicates:
8.An echo sounder set to read depth below the transducer will understate water depth by:
9.Significant wave height is defined as:
10.A swell of 14-second period in deep water travels at approximately:
11.Northern hemisphere subtropical gyres circulate:
12.Which is a strong, warm western boundary current?
13.Wave refraction over a shoal tends to:
14.Seawater density increases with:
15.The continental shelf break typically occurs at a depth of about:
