Some definitions regarding ROR
having learnt about the basics of the rules of the road at sea, we will now proceed to learn a few basic definitions regarding ROR
- A power driven vessel is a vessel under mechanical propulsion of any kind.
- the term sailing vessel applies only and only to a marine vessel if it is not using mechanical propulsion at all. If the vessel is using a combination of mechanical power and sails it is classified as a power driven vessel and does not come within the definition of a sailing vessel.
-The term "vessel engaged in fishing" means any vessel fishing with appartus that restrict her maneuverability- so, a pleasure boat with a couple of lines out is not a fishing vessel under ROR.
-“Seaplane" includes any aircraft designed to maneuver on the water.
- a vessel is said to be not under command when her exceptional circumstances prevent the navigating officers on board the vessel to manoeuvre her in a manner required by the rules of the road; therefore such a vessel is not in a position to keep out of the way of other vessels.
- sometimes a vessel may be severely restricted in her manoeuvrability because of specialised or complicated task she is performing which could be cable laying, survey, minesweeping and so forth and such a vessels is known as the "vessel restricted in her ability to maneuver".
- A "vessel constrained by her draft" means a power driven vessel which because of her depth in relation to the available depth and width of navigable water is severely restricted in her ability to deviate from the course she is following.
-The word "underway" means a vessel is not at anchor, or made fast to the shore, or aground. So for example, a vessel with her engines stopped and drifting is underway, and must comply with the rules.