Maritime Rules of the Road - Signals and COLREG Annexes

Learn about the requirements of light and sound signals in vessels and the COLREG Annexes in this free online course.

Publisher: ADU
This free online course on maritime rules of the road explains the ranges of navigation lights for different sizes of vessels. Learn about different ways of identifying various types of vessels as well as the differences between the anchor and aground vessels. Study the variations between a vessel not under command and a vessel that is restricted in its ability to manoeuvre. Register for this course today and begin your next learning journey!
Maritime Rules of the Road - Signals and COLREG Annexes
  • Duration

    3-4 Hours
  • Students

  • Accreditation






View course modules


Learn about the rules in part C (Rules 20-31) and D (Rules 32-36) of the Maritime Rules of the Road together with the COLREG annexes from this free online course. Some of these rules are to be complied with in good weather as well as bad weather. The range of each navigation light is specified and are divided based on the ship's length. This course discusses lights to be displayed by normal power-driven vessels along with towing and pushing vessels. Variations of the normal power-driven vessel need to display additional flashing lights to highlight their peculiarity. Learn about the additional lights other than the sidelights and stern light to be displayed by a sailing vessel when underway. This course also covers the differences between the NUC and the distress signal. Further information is provided on vessels constrained by their draught, vessels engaged in pilotage duty, along with anchored vessels and vessels aground. The course will then take you through the sound and light signalling equipment requirements for vessels. An overview of the COLREG Annexes will also be presented in this course.

The course, Maritime Rules of the Road - Signals and COLREG Annexes, begins with a discussion of the application of the maritime rules of the road as it relates to lights and shapes. The course describes how the Rules concerning lights shall be complied with from sunset to sunrise. You will learn about sidelights and the details of the range of navigation lights involving vessels of different lengths. This course goes further to explain the rules of towing and pushing, as well as the nature of lights to be displayed by towing and pushing vessels. You will learn about vessels engaged in fishing, whether underway or at anchor, exhibiting only the lights and shapes prescribed in the fishing vessels rule. You will also study the positioning and technical details of lights and shapes, including additional signals for fishing vessels fishing nearby. Then, you will analyze the technical details of sound signal appliances and the distress signals which can be used to indicate distress situations at sea.

By taking this course, you should be able to identify the attributes exhibited by vessels not under command or restricted in their ability to manoeuvre. You will also learn about the major reasons why vessels not under command are usually described as disabled vessels. The course will teach the major causes of the breakdown of the engine or rudder damage in vessels. Vessels restricted in ability to manoeuvre are having known limitations. You will be taken through the enabling factors that ensure a mine-clearance vessel is restricted in her ability to manoeuvre. You will also learn how vessels restricted in their ability to manoeuvre would show masthead light sidelights and stern light when making way through the water. You will be introduced to the aspect involving vessels engaged in dredging operation that does not require to show anchor lights. You will also get to know about how vessels engaged in clearance have a unique combination of navigation lights due to the nature of their hazardous work. If you are interested in exploring the rules that guide the operation of vessels at sea, then this course would be a great fit for you. So, register for this course today and begin your next learning journey!

Start Course Now