Joseph Huddart, a well-known hydrographer, produced this neat and highly informative sea chart of what is an intensely convoluted and difficult coast to survey, given the number of inlets, channels and islands. His clever selection of what to include in the geographical area depicted on the chart allowed the important and dangerous rocks of such coastal outliers as Skerryvore and Dhu Heartach to be included, as well as the inner reaches of the Firth of Clyde, and the southern coast of Skye.
Coastal soundings abound, particularly in the frequently traversed waterways of the Sounds of Islay and Mull, the Kyles of Bute, and the Firth of Clyde. Huddart puts in comments about the abundance of cod and ling in these coastal waters, (and of mud in the Firth of Clyde), and draws attention to the ‘solan geese’ (gannets) found on Ailsa Craig (Elsa), and to the unpredictability of the tidal stream there. The Corryvreckan whirlpool is indicated, and described as dangerous, and Huddart draws coastal profiles to aid the navigator, including of the Cuillin and the Paps of Jura. To aid safe passage through the area for those sailing from the west coast of Great Britain to Norway, he indicates the track they should take.