Question 30 ONC05 - Master or Mate of LT 200 GRT

The Correct Answer is C **Why option C ("sailing vessel") is correct:** Illustration D080RR shows a vessel displaying two all-round lights: a red light positioned above a green light. According to the International Regulations for Preventing Collisions at Sea (COLREGs), Rule 25 (Sailing Vessels Underway and Vessels Under Oars), a sailing vessel of 20 meters or more in length may exhibit, in addition to the required sidelights and sternlight, the optional combination of masthead lights: an all-round red light over an all-round green light. These lights are commonly referred to as the "red over green" lights, which signify a vessel under sail. **Why the other options are incorrect:** * **A) vessel on pilotage duty:** A vessel engaged in pilotage duty displays two all-round lights: a white light positioned above a red light ("white over red"). This is different from the red over green lights shown. * **B) law enforcement vessel:** While law enforcement vessels often use flashing blue lights (especially when pursuing or signaling), the standard navigation/status lights for an engaged law enforcement vessel do not typically rely solely on the red over green configuration shown to indicate their engaged status. * **D) vessel engaged in fishing:** A vessel engaged in fishing, other than trawling, displays two all-round lights: a red light positioned above a white light ("red over white"). This is different from the red over green lights shown. A vessel engaged in trawling displays a green light positioned above a white light ("green over white").