Question 3386 Deck General

The correct answer is C) 150 feet. The maximum recommended water depth for elevating a vessel with a single amplitude roll angle of 1 degree and a roll period of 7 seconds is 150 feet. This is based on the stability guidelines for vessels, which recommend a minimum water depth of 1.5 times the vessel's draft to prevent the vessel from touching bottom during rolling. With the given roll characteristics, the appropriate water depth would be 150 feet. The other options are incorrect because 50 feet is too shallow, 100 feet is still too shallow, and 200 feet would be unnecessarily deep for the given vessel characteristics.