Favorite unresolved maritime mysteries

What are the panel's favorite lesser-known naval or maritime mysteries?

They nominate HMAS Sydney, the Flannan Isles disappearance, Makarov's final fate, and unresolved claims surrounding Costa Concordia.

Each speaker chooses a case where missing evidence or disputed testimony leaves room for historical inquiry. The exchange distinguishes genuine uncertainty from sensationalism while showing how wrecks, disappearances, and incomplete operational records generate durable maritime mysteries. HMAS Sydney represents an unresolved combat loss, while the Flannan Isles case centers on disappearance without recovered bodies. Makarov's fate and claims surrounding Costa Concordia show how later testimony, shipboard organization, and implausible smuggling methods must be weighed critically.