The document summarizes various IRPCS rules regarding lookouts, determining risk of collision, right of way, crossing traffic separation schemes, sound signals, and lights and shapes for different types of vessels. Key rules include maintaining a proper lookout, assessing risk of collision based on constant bearing, giving way to vessels on the starboard side or less maneuverable vessels, obeying right of way in traffic lanes, and using proper lights and sound signals depending on vessel size and conditions.

1. IRPCS Rules, lights, shapes and sounds

2. Rules - Lookout Sight, sound, VHF, Radar, AIS Watch blind spots No relaxing this rule

3. Rules - Lookout Watch for traffic from behind High speed craft can come from horizon to your position in less than 10 mins!!

4. Does risk of collision exist? Take bearing If it does not change – risk of collision exists

5. Rules – craft meeting Port to port Turn right Drive on right

6. Rules – craft meeting Give way to craft on starboard side Right is right!!

7. Rules – craft meeting Overtaking boat keeps clear This includes sailing boats!!

8. Rules – craft meeting -priorities Give way to craft less able to manoeuvre than you!

9. Rules – craft meeting -priorities Give way to shipping in channels Cross with care Keep out if possible

10. Rules – Crossing a TSS Heading at right angles to TSS Avoid crossing in fog Avoid sailing across in light winds Cross as quickly as possible

11. Rules – sailing vessels Port gives way to starboard Weather boat keeps clear Overtaking boat keeps clear

12. Rules - Sound signals In good viz In fog

13. Lights - small craft lights All craft 7m+ Less than 50m (power) Less than 20m (sail)

14. Lights - Ships 50 m + Watch for deck lights!! Beware of background lights

15. Lights + Shapes - Ships