Vessel engaged in diving operations.
Vessel restricted in her ability to mmaneuver - making way, vessel less than 50 meters in length.
Vessel restricted in her ability to mmaneuver - at anchor, vessel
less than 50 meters in length.
Vessel engaged in mineclearance operations - vessel 50 meters or greater in length.
Vessel engaged in dredging or underwater operations when restricted in ability to maneuver - not making way with an obstruction, starboard side.
Vessel engaged in dredging or underwater operations when restricted in ability to maneuver - making way with an obstruction on the starboard side.
Vessel engaged in towing operation which severely restricts towing vessel and her tow in their ability to deviate from their course - length of tow does not exceed 200 meters, towing vessel less than 50 meters in length.
Vessel not under command - not making way.
Vessel not under command - making way.
Vessel restricted in her ability to mmaneuver - at anchor, vessel less than 50 meters in length.
Vessel restricted in her ability to mmaneuver - making way, vessel less than 50 meters in length.
Definitions for "vessel not under command" and "vessel restricted in her ability to maneuver" are given in Rule 3(f) and (g). These vessels cannot comply with the requirements of the Navigation Rules, they are given special privileges, and their status is indicated by special lights.
A vessel not under command is one that has suffered a steering failure or a loss of propulsion power. The term "vessel restricted in her ability to maneuver" is applicable to one attached to the bottom for work, such as a dredge, or a Coast Guard buoy tender servicing an aid to navigation, or a ship laying underwater cables. A tug towing a barge is not normally considered to be restricted in her ability to maneuver, but there may be situations where this is warranted and additional lights and shapes may be displayed.
A vessel engaged in diving operations may or may not be restricted in her ability to maneuver. A salvage vessel with "hard hat" divers down - supplied with air from pumps on the surface, is definitely restricted in her ability to maneuver and should show the lights of Rule 27(d) or (e). On the other hand, a dive boat with free-swimming SCUBA divers in the water is definitely not restricted and should not show the signals of Rule 27(e). Such a craft should fly the "diver's flag" (red with one white diagonal stripe) that signifies "Divers in the water, keep clear." This flag is not a part of the Navigation Rules, but is used and is legally required by many state and local authorities. Rule 27(e) requires "a rigid replica" of the International Code flag "A".
A vessel not under command is one that has suffered a steering failure or a loss of propulsion power. The term "vessel restricted in her ability to maneuver" is applicable to one attached to the bottom for work, such as a dredge, or a Coast Guard buoy tender servicing an aid to navigation, or a ship laying underwater cables. A tug towing a barge is not normally considered to be restricted in her ability to maneuver, but there may be situations where this is warranted and additional lights and shapes may be displayed.
A vessel engaged in diving operations may or may not be restricted in her ability to maneuver. A salvage vessel with "hard hat" divers down - supplied with air from pumps on the surface, is definitely restricted in her ability to maneuver and should show the lights of Rule 27(d) or (e). On the other hand, a dive boat with free-swimming SCUBA divers in the water is definitely not restricted and should not show the signals of Rule 27(e). Such a craft should fly the "diver's flag" (red with one white diagonal stripe) that signifies "Divers in the water, keep clear." This flag is not a part of the Navigation Rules, but is used and is legally required by many state and local authorities. Rule 27(e) requires "a rigid replica" of the International Code flag "A".
