His first stab at a maritime chronometer started in 1730 and resulted in the Harrison H1 which was given a sea trial in 1736. It wasn’t the very first clock designed for a ship, but it did ...

This programme is about time, and our object is a clock - a marine chronometer made around 1800. But the point of this clock wasn't so much to tell you the time as to tell you where you were.

This programme is about time, and our object is a clock - a marine chronometer made around 1800. But the point of this clock wasn't so much to tell you the time as to tell you where you were.