Scale 1:48. A comparative plan depicting the hulls of two unnamed Sixth Rates; one of 87ft 8in length and 28 guns and the other of 70ft length and 22 guns. For each vessel, the plan shows the sheer lines with outboard detail above the waterline, longitudinal half-breadth, sternboard, aft body and fore body. Additionally, there is what appears to be a generic midships section of a Sixth Rate, illustrating the positions of the various decks, pillars and placement of the guns. The latter, in this case, are shown as 12cwt demi-culverins with a barrel length of 6ft.

The Keltridge Draughts all carry a very high level of detail, paticularly in relation to the exterior fittings and decoration of the ships depicted. On these vessels, the ornate letters 'I R' can be seen. At first glance, this would seem to suggest vessels that were built or drawn as they appeared during the reign of James II [1685-1688]. However, this is unlikely, given that the Keltridge drawings are supposed to date from the end of Charles II's reign. No explanation for this can be found on the drawings.