WNavigational aid
WAmbrose Channel pilot cable
WApproach lighting system
WAutomatic direction finder
WAutomatic identification system
WCCGS Bartlett
WCairn
WCarlisle & Finch
WChartplotter
WDay beacon
WDaymark
WDistance measuring equipment (aviation)
WElectronic Chart Display and Information System
WElectronic navigational chart
WFiddler's Reach Fog Signal
WFoghorn
WFort Denison
WGee (navigation)
WHemispherical resonator gyroscope
WInertial navigation system
WInstrument landing system
WLeading lights
WLightvessel
WList of lights
WLORAN
WLoran-C
WManana Island Sound Signal Station
WMarine radar
WNAVTEX
WUSCGC Oak (WLB-211)
WOboe (navigation)
WOpenCPN
WPEL sector light
WPelorus (instrument)
WRadar beacon
WRadar navigation
WRadio acoustic ranging
WRadiofax
WSignal station
WSubmarine signals
WUSCGC Sycamore (WLB-209)
WCCGS Tracy
WAids to Navigation Boat
WVessel traffic service
WVippefyr
WVORTAC
WWide Area Augmentation System
WUSCGC Willow (WLB-202)
WYeoman plotter