Vessel at anchor
White all-round light forward (and a lower one aft). All-round white, no sidelights, no movement: at anchor. Large vessels: forward light higher, after light lower.
Drag across the scene to walk around the ship. Tap a light to see its name.
Lights (Rule 30)
| Light | Colour | Sector | Height above water |
|---|---|---|---|
| white all-round anchor light, forward (higher) | white | all-round, 360° | 14 m |
| white all-round anchor light, near the stern (lower) | white | all-round, 360° | 9 m |
Model: a 90 m ship with the superstructure aft. Heights and positions follow COLREG Annex I (positioning of lights).
Day shapes
- ball · one ball forward
Shapes are black and hoisted where they can best be seen: a ball at least 0.6 m in diameter, vertical spacing at least 1.5 m (Annex I, section 6). Set the trainer above to day to see them.
Fog signal
Rapid ringing of the bell for about 5 seconds at intervals of not more than one minute (Rule 35g). From 100 m also a gong aft.
A short blast lasts about 1 second, a prolonged blast 4 to 6 seconds (Rule 32). The play button is in the trainer above.
What to watch for
A vessel under 50 m may show one all-round white light where it can best be seen, instead of two.
From 100 m she also illuminates her decks. By day: one ball.
Quick answers
What lights does a vessel at anchor show at night?
White all-round light forward (and a lower one aft). In full: white all-round anchor light, forward (higher); white all-round anchor light, near the stern (lower).
What day shapes does a vessel at anchor show?
By day she shows: one ball forward.
What is the fog signal of a vessel at anchor?
Rapid ringing of the bell for about 5 seconds at intervals of not more than one minute (Rule 35g). From 100 m also a gong aft.