Sailing vessel with optional red-over-green lights
Sidelights, sternlight, plus red over green at the masthead. "Red over green, sailing machine." A sailing vessel using the Rule 25(c) option, high on the mast.
Drag across the scene to walk around the ship. Tap a light to see its name.
Lights (Rule 25c)
| Light | Colour | Sector | Height above water |
|---|---|---|---|
| green sidelight (starboard) | green | sidelight, starboard, 112.5° | 1.6 m |
| red sidelight (port) | red | sidelight, port, 112.5° | 1.6 m |
| white sternlight | white | stern, 135° (around the stern) | 1.5 m |
| red all-round light (upper, at the masthead) | red | all-round, 360° | 17.4 m |
| green all-round light (lower, at the masthead) | green | all-round, 360° | 16.4 m |
Model: a 12 m vessel. Heights and positions follow COLREG Annex I (positioning of lights).
Fog signal
One prolonged and two short blasts at intervals of not more than 2 minutes (Rule 35c).
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
These two lights are never shown together with the combined masthead lantern allowed for sailing vessels under 20 m.
Quick answers
What lights does a sailing vessel with optional red-over-green lights show at night?
Sidelights, sternlight, plus red over green at the masthead. In full: green sidelight (starboard); red sidelight (port); white sternlight; red all-round light (upper, at the masthead); green all-round light (lower, at the masthead).
What is the fog signal of a sailing vessel with optional red-over-green lights?
One prolonged and two short blasts at intervals of not more than 2 minutes (Rule 35c).