Q:What vessel shows a flashing white, red, green, yellow, blue and violet over a red and green?
A:A sailing yacht of no more than 9m, under way, and sporting a Christmas tree at the masthead.

Today’s picture shows London’s Canary Wharf taken from the deck of a Contessa 32 while sailing up the River Thames at night after the photographer spent five hours in the snug of the Gun Inn in Blackwall Reach.

A Merry Christmas and a Happy New Year to all my readers.