The answers can be found in the respective Rules and Paragraphs in the bookInternational Regulations for Preventing Collisions at Sea Colregs by Capt.
Sailing vessel in restricted visibility. Section IIIConduct of Vessels in Restricted Visibility. Vessel restricted in her ability to manoeuvre Vessel C. Steering and Sailing Rules Section III Rule 19 applies to vessels that are not in sight of one another navigating in or near an area of restricted visibility.
Sailing vessel means any vessel under sail. Unlike the rules of section II there are no vessels designated as the give way or stand on vessel. G The term vessel restricted in her ability to manoeuvre means a vessel which from the nature of her work is restricted in her ability to manoeuvre as required by these Rules and is therefore unable to keep out of the way of another vessel.
Power-driven vessel Vessel D. A vessel engaged in such operations when at anchor in restricted visibility should sound the signal prescribed in Rule 35 g. Applying the Rule s and comments.
Power-driven vessel Vessel B. D navigating in or near an area of restricted visibility INLAND ONLY If your tug is pushing a barge ahead at night and it is not a composite unit which lights should show aft on your vessel. The term vessel engaged in fishing means any vessel fishing with nets lines trawls or other fishing apparatus which restrict manoeuvrability but does not include a vessel fishing with trolling lines or other fishing apparatus which do not restrict manoeuvrability.
In or near an area of restricted visibility whether by day or night the signals prescribed in this Rule shall be used as follows. 36 RULE 19 Conduct of Vessels in Restricted Visibility. Conduct of vessels in restricted visibility.
Rules includes maritime rules and marine protection rules. Pierre Deseck andor in the Colregs Presentation on DVD. G The term vessel restricted in her ability to manoeuvre means a vessel which from the nature of her work is restricted in her ability to manoeuvre as required by these Rules and is therefore unable to keep out of the way of another vessel.