Rules of the Road Statements to Recognize Part C PDF

Rules of the Road Statements to Recognize Part C Part C Lights and Shapes Rule 20 Application 1) The rules concerning lights shall be complied with in all weathers from sunset to sunrise. The lights shall be displayed in restricted visibility during daylight hours. 2) Day-shapes MUST be shown du...

Rules of the Road Statements to Recognize Part C Part C Lights and Shapes Rule 20 Application 1) The rules concerning lights shall be complied with in all weathers from sunset to sunrise. The lights shall be displayed in restricted visibility during daylight hours. 2) Day-shapes MUST be shown during daylight hours. Rule 21 Definitions 3) The arc of visibility for sidelights is from right ahead to 22.5° abaft the beam. 4) A towing light, according to the Rules, is a yellow light. 5) You see a vessel's green sidelight bearing due east from you. The vessel might be heading southwest (225°). 6) The stern light shall be positioned such that it will show from dead astern to 67.5 degrees on each side of the stern of the vessel. 7) A vessel is towing and carrying the required masthead lights. The visibility arc of these masthead lights is 225.0°. 8) A "flashing light", by the definition given in the rules, is a light that flashes at regular intervals at a frequency of 120 flashes or more per minute. 9) You see a red sidelight bearing NW (315°). That vessel may be heading south (180°). Rule 22 Visibilities of Lights Rule 23 Power-driven Vessels Underway 10) The minimum length of a power-driven vessel that must show forward and after masthead lights is 50 meters. 11) The minimum vessel length which must show a second masthead light abaft of and higher than the forward one is 50 meters. 12) The lights shown in Diagram 58 are those of a power-driven vessel of less than 50 meters in length. 13) The maximum length of a power-driven vessel which may show an all-round white light and sidelights instead of a masthead light, sidelights and a stern light is 11.9 meters. 14) A self-propelled dredge not engaged in dredging but proceeding to a dredging location at night would be required to show the lights of a power-driven vessel underway. 15) Your tug is underway at night and NOT towing. The light your vessel should show aft to other vessels coming up from astern is one white light. 16) A power-driven vessel exhibits the same lights as a pushing vessel and a vessel being pushed, when they are in a composite unit. 17) At night, a power-driven vessel less than 12 meters in length may, instead of the normal navigation lights, show sidelights and one white light. 18) At night, a vessel displaying the lights shown in Diagram 52 is underway. 19) A 30-meter tug is underway and NOT towing. At night, this vessel must show sidelights and one masthead light and a stern light. 20) A towing vessel pushing a barge ahead and rigidly connected in a composite unit shall show the lights of a power-driven vessel, not towing. 21) The masthead light may be located at other than the fore and aft centerline on a power-driven vessel less than 12 meters in length. 22) The lights shown in Diagram 52 are those of a power-driven vessel of less than 50 meters in length. 23) You see a vessel displaying ONLY the lights shown in Diagram 45. This could be a pilot vessel less than 50 meters, underway and NOT engaged on pilotage duty. 24) You see the lights shown in Diagram 45. It would be the port side of a power driven vessel. 25) A vessel which is underway at night and displaying the lights shown in Diagram 52 is a power driven vessel under 50 meters. Rule 24 Towing and Pushing 26) A towing vessel 35 meters in length, with a tow 100 meters astern, must show a minimum of 2 masthead lights. 27) This vessel must exhibit three white masthead lights in a vertical line; a vessel whose tow exceeds 200 meters astern. 28) A vessel displaying the day shape shown in Diagram 10 is towing. 29) A vessel that is not equipped with towing lights should show that it has a vessel in tow by shining a searchlight on the towline of the towed vessel. 30) At night you are towing a barge astern, if any, the lights the barge you are towing should display are sidelights and a stern light. 31) A towing vessel 30 meters in length is pushing barges ahead. The number of white masthead lights the vessel is REQUIRED to show at night is two. 32) A vessel being towed astern, at night, will show sidelights and a stern light. 33) The day-shape lettered B shown in Diagram 16 indicates a vessel with a tow exceeding 200 meters in length. 34) A vessel being towed astern shall show at night sidelights and a stern light. 35) A vessel being towed astern, where the length of the tow exceeds 200 meters, will exhibit a diamond shape where it can best be seen. 36) A power-driven vessel, when towing astern, shall show a towing light in a vertical line above the stern light. 37) Side lights and a stern light must be shown on a barge being towed astern at night. 38) A power-driven vessel, when towing astern, shall show a towing light in a vertical line above the stern light. 39) An inconspicuous, partly submerged vessel or object being towed, where the length of tow is 100 meters, shall show a diamond shape. 40) A single towing light will be carried above a vessel's stern light only if she is towing astern. 41) The light(s), if any, you would show at night if your vessel was broken down and being towed astern by another vessel are the colored sidelights and a white stern light. 42) A vessel, which does not normally engage in towing operations, is towing a vessel in distress. She need not show the lights for a vessel engaged in towing, if it is impractical to do so. 43) A 20-meter vessel is towing another vessel astern. The length of the tow from the stern of the towing vessel to the stern of the tow is 75 meters. The number of white towing masthead lights the towing vessel shall show at night is 2. 44) A power-driven vessel with a 150-meter stern tow shall display a towing light above the stern light. 45) At night, you are towing a partly submerged vessel, 20 meters in length and 4 meters in breadth. The lights you must display on the towed vessel are a white light at the forward end and a white light at the after end. 46) The lights, if any, you would exhibit at night if your vessel were broken down and being towed by another vessel are the colored sidelights and a white stern light. 47) A diamond day-shape must be shown on a partly submerged vessel which is being towed. 48) A vessel being towed astern, where the length of the tow exceeds 200 meters, will exhibit a diamond shape where it can best be seen. 49) You are towing two barges astern. The length of the tow from the stern of the tug to the stern of the last barge is 150 meters. The number of white towing identification lights should be displayed on the tugboat at night is 2. 50) You are overtaking a vessel at night and you see a yellow light showing above the stern light of the overtaken vessel. The overtaken vessel is towing astern. 51) A power-driven vessel towing another vessel astern (tow less than 200 meters) shall show two masthead lights in a vertical line instead of either the forward or after masthead lights. 52) A vessel towed astern shall show sidelights and a stern light. 53) At night, a broken down vessel being towed would show the same lights as a barge. 54) Two barges are being pushed ahead by a tugboat. This statement is TRUE concerning lights on the barges; the barges should be lighted as one vessel. 55) You are approaching another vessel at night. You can see both red and green sidelights and, above the level of the sidelights, three white lights in a vertical line. The vessel may be towing a tow more than 200 meters astern. 56) When towing more than one barge astern at night each barge in the tow must be lighted. 57) In Diagram 16 the day-shape shown by letter B indicates a vessel with a tow exceeding 200 meters in length. 58) A vessel displaying the lights shown Diagram 63 is towing astern. 59) A vessel displaying the day-shape shown in Diagram 10 has a tow that exceeds 200 meters in length. Rule 25 Sailing Vessels Underway and Vessels Under Oars 60) A vessel 15 meters in length which is proceeding under sail as well as being propelled by machinery shall exhibit during the daytime a cone with its apex downward. 61) A 22-meter sailing vessel when also being propelled by machinery shall show during daylight hours a black cone apex down. 62) A sailing vessel displaying the day-shape shown in Diagram 35 is indicating that she is being propelled by power as well as sail. 63) A vessel which is underway at night and displaying the lights shown in Diagram 47 is sailing. 64) A sailing vessel is NOT allowed to show the all-round red over green lights on the mast if her sidelights and stern light are combined in one lantern and shown on the mast. 65) A 15-meter sailing vessel would be required to show sidelights, and stern light, but they may be in a combined lantern on the mast. 66) If a rowboat underway does NOT show the lights specified for a sailing vessel underway, it shall show a white light shown in sufficient time to prevent collision. 67) A sailing vessel underway may exhibit a red light over a green light at the masthead. 68) A sailing vessel of over 20 meters in length underway must show a stern light. 69) A 20-meter sailing vessel underway must exhibit a stern light. 70) At night you sight a vessel displaying one green light. This light could indicate a sailboat underway. 71) At night, a vessel displaying the light shown in Diagram 46 is sailing. Rule 26 Fishing Vessels 72) A vessel displaying the lights shown in Diagram 82 is a fishing vessel. 73) A vessel engaged in fishing should display the day signals lettered B shown Diagram 1. 74) At night, you would see a red light over a white light on a vessel engaged in fishing, other than trawling. 75) A vessel trawling will display a green light over a white light. 76) If a vessel is engaged in fishing according to the definitions in the Rules, it will have gear that restricts maneuverability. 77) A vessel engaged in fishing, and at anchor, shall show a red light over a white light, whether underway or at anchor. 78) A vessel which is fishing must show sidelights and a stern light only when underway and making way. 79) A vessel at night, displaying the lights shown in Diagram 82 is fishing. 80) A vessel engaged in fishing must display a light in the direction of any gear that extends outward more than 150 meters. The color of this light is white. 81) A fishing vessel that is not making way shall NOT show her sidelights. 82) A vessel displaying the lights shown in Diagram 54 is a fishing vessel. 83) At night a vessel displaying the lights shown in Diagram 82 is engaged in fishing. Rule 27 Vessels Not Under Command or Vessels Restricted in Their Ability to Maneuver 84) During the day, a dredge will indicate the side on which it is safe to pass by displaying two diamonds in a vertical line. 85) A power-driven vessel "not under command" at night must show two red lights in a vertical line. 86) A vessel displaying the lights shown in Diagram 84 is not under command. 87) A vessel restricted in her ability to maneuver would show 3 day-shapes in a vertical line, the highest and lowest being balls and the middle shape being a diamond. 88) At night, two green lights are required to be shown by a dredge on the side of the dredge which another vessel may pass. 89) Two all-round red lights displayed in a vertical line are shown by a vessel not under command. 90) A vessel displaying the day-shapes shown in Diagram 7 is broken down. 91) A vessel mineclearing is a "vessel restricted in her ability to maneuver" under the Rules. 92) A vessel not under command would have no white lights visible when meeting her head-on. 93) A vessel which is unable to maneuver due to some exceptional circumstance shall show two red lights in a vertical line and when making way at night, sidelights and a stern light. 94) A vessel displaying the day signal shown in Diagram 7 is not under command. 95) While underway, you see a vessel displaying the day-shapes shown in Diagram 6. The action which should be taken is to; stay clear, the other vessel is maneuvering with difficulty. 96) A rigid replica of the International Code flag "A" may be shown by a vessel engaged in diving operations. 97) A vessel towing astern in an operation which severely restricts the towing vessel and her tow in their ability to deviate from their course shall show all of these lights when making way; the masthead lights for a towing vessel, the lights for a vessel restricted in its ability to maneuver, and sidelights, stern light and towing light. 98) An anchored vessel is servicing an aid to navigation and is restricted in her ability to maneuver. The lights she will show are three lights in a vertical line, the highest and lowest red and the middle white, and anchor lights. 99) Masthead lights, sidelights and stern light are shown by a “vessel restricted in her ability to maneuver” to indicate that the vessel is making way. 100) A vessel engaged in diving operations may show three lights in a vertical line, the top and bottom being red and the middle being white. 101) A vessel engaged in a towing operation such as severely restricts the towing vessel and her tow in their ability to deviate from their course shall carry the lights for a towing vessel and the lights for a vessel restricted in her ability to maneuver. 102) A vessel engaged in mineclearing shows all of these special identity lights; in addition to the lights required for a power-driven vessel, which mean that other vessels should not approach within 1000 meters of the mine clearing vessel, and which are green and show all-round the horizon. 103) A vessel not under command making way at night would show two all-round red lights in a vertical line, sidelights, and a stern light. 104) A vessel displaying the lights shown in Diagram 56 could be a vessel underway and laying cable. 105) A vessel transferring provisions or cargo at sea shall display during the day three black shapes in a vertical line; the highest and lowest shall be balls and the middle one a diamond. 106) You see a vessel displaying the day signal shown in Diagram 6. The vessel may be laying cable. Rule 28 Vessels Constrained by Their Draft Rule 29 Pilot Vessels 107) A vessel displaying ONLY the lights shown in Diagram 53 is a vessel engaged on pilotage duty underway. Rule 30 Anchored Vessels and Vessels Aground 108) The lights displayed in Diagram 44 would be shown by a vessel which is aground. 109) A vessel at anchor shall display, between sunrise and sunset, on the forward part of the vessel where it can best be seen one black ball. 110) A vessel displaying the day-shapes shown in Diagram 11 is aground. 111) Working lights shall be used to illuminate the decks of a vessel over 100 meters at anchor. 112) When anchoring a 25-meter vessel at night, you must show one all-round white light. 113) Three black balls is the day-shape a vessel aground would show during daylight. 114) Three black balls is the day-shape which must be shown by a vessel 25 meters in length aground during daylight hours. 115) A vessel aground at night is required to show two red lights in a vertical line as well as anchor lights. 116) A vessel 30 meters in length and aground would display a day-shape consisting of three black balls in a vertical line. 117) Three black balls would be the signal a vessel aground would show during daylight. 118) At night, a vessel which is less than 7 meters in length and anchored in an area where other vessels do not normally navigate is not required to show any anchor lights. 119) All of these statements are TRUE concerning a vessel of 75 meters in length, at anchor; she must show an all-round white light forward, she must show a second all-round white light aft, and she may use her working lights to illuminate her decks. 120) An anchor ball need NOT be exhibited by an anchored vessel if she is less than 7 meters in length, and not in or near an area where other vessels normally navigate. Rule 31 Sea Planes