National Technical Information Service.

National Transportation Safety Board (U.S.)

Non-Transportation Use

Energy that comes from splitting atoms of radioactive materials, such as uranium, and which produces radioactive wastes.

National Union of Mrine, Aviation & Shipping Transport Officers

Forecasting weather by the use of numerical models, run on high speed computers. Most of the NWP for the National Weather Service is done at the National Centers for Environmental Prediction (NCEP).

A kind of navigational buoy

Isolated rocky peak rising from a sheet of inland ice.

Negative Vorticity Advection.

Navigation and Vessel Inspection Circular (USCG).

Non-Vessel Operating Common Carrier.

National Vocational Qualification.

National Weather Service. Administered by the U.S. Department of Commerce.

New York Mercantile Exchange

New York Society of Maritime Arbitrators