Nav Light Trainer

Study vessel light signatures from any bearing, switch to day shapes, and drill recognition with quick ID tests inside the unified NavRules site.

View Status

Bearing000°

Elevation02°

Distance14 m

AspectBow

Mode

Vessel

Study vessel type

Vessel length: 38 m

Power-driven vessels 50 m or more show a second masthead light abaft and higher than the forward masthead light.

Viewer

Time of day: Blue Sky

Blue Sky Sunset Midnight

Fog: 0%

Clear Light Fog Dense Fog

Light glow Vessel motion

Show notes Stars

Use the mini map like a top-down camera control: angle around the vessel, drag outward for more range, use the right rail for elevation, and layer fog onto any time of day.

Mini Map

Range14 m

Elevation2.0°

Drag the dot to place the camera around the vessel. Dot angle is bearing, dot radius is camera range, and the right rail changes elevation.

Observed Lights

Power-driven vessel

Use the mini map to compare how sidelights, sternlight, and masthead lights appear as your viewing angle changes.