About

Full and by is a Nautical term, referring to the act of sailing into the wind (by), but not as close-hauled as might be possible, so as to make sure the sails are kept full. This provides a margin for error to avoid being taken aback (a serious risk for square-rigged vessels) in a tricky sea. Figuratively it implies getting on with the job but in a steady, relaxed way, without undue urgency or strain.

13 ° N is the latitudinal component of the Geographical co-ordinates for the island of Barbados.