It depends where the 16 foot vessel is located in order to know what it should be equipped with.
An anchor with minimum 50 ft.
throwable PFD
USCG certified personal flotation device.
The class of vessel must be 16 ft or longer to be US Coast Guard approved.
If your vessel is 16 feet or longer, in addition to one life jacket for each person on board, you must also have a throwable flotation device, such as a ring buoy or cushion. Additionally, you are required to have a fire extinguisher, a sound-producing device like a whistle or horn, and navigation lights if operating after dark. Depending on the type of vessel, a visual distress signal may also be necessary. Always check local regulations for any additional requirements.
16 foot x 16 foot deck would be 256 square feet.
16*16 = 256 square feet
A 16-foot circle has an area of 201.06 square feet.
In the United States, boats that are 16 feet long or over must be equipped with one Type IV PFD (as classified by the United States Coast Guard) per boat. A Type IV PFD is a throwable floating device; whether the classic "lifebuoy" or "lifesaver" type round version, or the square cushion-like type that are placed on the seats of recreational craft.
SD 16 female:Length of foot (flat): 6.7cmLength of foot (high heel): 7.5cm
16 foot circle = 110.48 sq. feet
16 inches is longer. A foot is 12 inches.