Regarding the recent nautical-themed post, @oldmapman commented: “Another maritime connection is parish of St Clement Danes, symbol an anchor.”
To that, compliments of @MattF, I can now add the following: “Saint Clement was supposedly martyred by being tied to an anchor and thrown overboard – hence the anchor symbolism.”
Thank you both for that information and, as ever, all comments (well, maybe nearly all) welcome from readers.