The journal covers the period 23 February-7 November 1763 and consists of daily tabulated log entries showing the course of the ship and meteorological conditions on the voyage.
A set of additional pages is loosely inserted [RGO 4/321: 14-20], showing a sketch of an unnamed island, possibly Barbados [RGO 4/321: 14], and various computations [RGO 4/321: 15-20] including comparisons of observations from voyages of 1761-1764 to ascertain errors in the quadrant [RGO 4/321: 15]; observations of stars [RGO 4/321: 16r-17v]; meridian altitudes of the Sun's latitude by Maskelyne [RGO 4/321: 16v]; and computations for finding longitude [RGO 4/321: 18r-20v].
The journal ends with a log of the observations for the period 19 October-8 November 1763 [RGO 4/321: 38v-40v].