St.Helen's Road Spithead Portsmouth and Langstone harbours. Surveyed in 1783 by Lieut. Murdoch Mackenzie Junr.

Single sheet. Engr. Medium: Linen backed. Scale: [ca.1:25 000]. Cartographic Note: Ungraduated. Variation shown. Soundings and seabed contours. Clearing lines. Scale in nautic miles. Additional Places: Solent. Contents Note: Note: Ship's store. For which the Captain is to give a receipt and hold himself accountable to be delivered to his successor when superseded, & if the ship is paid off to be sent up to the Hydrographical Office at the Admiralty.

The manuscript for this is G223:2/131.