When writing in the log book, entries should be made how?

Correct Answer: Option C — In black ink only, in all capital letters

Logbook entries must be made in black ink and all capital letters to ensure permanence, legibility, and legal admissibility. Black ink is required for high-contrast photocopying, and capital letters prevent ambiguity in handwriting, which is a standard requirement for official maritime records under 46 CFR and general bridge protocols.