Coasting Bargemaster In Coasting Bargemaster, Bob Roberts tells of taking refuge, whilst in the Martinet, in an offshore anchorage: “It is a desolate spot, many miles offshore, where the Maplin sands are divided from the Whitaker shoals by a semi-circle of water from three to four fathoms in depth at low tide.” Coasting Bargemaster by …
Acoustic depth sounders appeared in the twentieth century, earlier for ships than yachts. However, from at least biblical times depth was found by lead and line.
King’s Fleet on the Deben Port of Goseford – Canes Seed – Edward III’s Fleet – Charles I engineers
How many bells at what time in a watch – What were the watches – Dog Watches – How was the day reckoned?