International Regulations For Preventing Collisions At Sea, 1972 Page 1 : Contents Page 2 : Part A - General Page 3 : Part B Section I - Steering and Sailing / any visibility Page 4 : Part B Section II - Steering and Sailing / vessels in sight Page 5 : Part B Section III - Steering and Sailing / restricted visibility Page 6 : Part C - Lights and Shapes Page 7 : Part D - Sound and Light Signals Page 8 : Part E - Exemptions see also: Annexes to Collision Regulations