Viewers frequently suggest a different ship after an episode, but abstract significance is only one factor in scheduling. Selection depends on available research time, the organizing theme for that run, and access to strong sources. Each Key Ships series has an unannounced theme, so a ship can fit the sequence even when another vessel seems more important in isolation. A desired episode may also wait while specific books are acquired. This explains why Rolf Krake could be an obvious subject yet still appear later than Danmark.
Chapter · 3:00-3:55
How ships are selected for a themed naval-history series
Ship selection balances the theme of each series, research time, and the quality of available historical sources.