Following sea
http://dbpedia.org/resource/Following_sea
A following sea refers to a wave direction that is similar to the heading of a waterborne vessel under way. The word "sea" in this context refers to open water wind waves. In the strict sense, a following sea has a direction of propagation between 15° either side of vessel heading, and has a celerity that does not exceed the velocity of the vessel in the direction of wave propagation. If the wave moves faster than the vessel it is an overtaking sea. If the angle to vessel heading is more than 15° it may be a quartering sea.
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Following sea
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A following sea refers to a wave direction that is similar to the heading of a waterborne vessel under way. The word "sea" in this context refers to open water wind waves. In the strict sense, a following sea has a direction of propagation between 15° either side of vessel heading, and has a celerity that does not exceed the velocity of the vessel in the direction of wave propagation. If the wave moves faster than the vessel it is an overtaking sea. If the angle to vessel heading is more than 15° it may be a quartering sea.
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2970