nois - offi
- noise abatement
- noise direction-finding
- noise due to marine life
- noise generator
- noise killer
- noise level
- noise limiter
- noise meter
- noise pattern
- noise power
- noise reducing splitter
- noise reduction
- noise signal
- noise silencer
- noise spectrum
- noise suppressor
- noise trials
- noise-intensity contour
- noise-level meter
- noise-measuring instrument
- noise-reduced propeller
- noiseless speed
- noisemaker
- nomenclature
- nominal compression ratio
- nominal horsepower
- nominal output
- nominal parameter
- nominal pitch
- nominal power
- nominal slip
- nomogram
- nomograph
- non-absorbent material
- non-adiabatic
- non-axisymmetrical ducted propeller
- non-axisymmetrical nozzle
- non-central load
- non-combustible material
- non-commissioned
