450. BOTH INTERNATIONAL & INLAND You see a vessel displaying the code flag «LIMA» below which is a red ball. The vessel is indicating it is in which of the following situations?

A vessel displaying code flag Lima with a ball below indicates it is in distress. This combination is a recognized visual distress signal as defined in Navigation Rules Annex IV, signifying a vessel in grave and imminent danger requiring immediate assistance. Other situations, such as being aground, fishing, or preparing to receive aircraft, utilize distinct signals not matching this distress indication.