While Commodore Matthew Perry is best known for his two visits to Japan, he also spent time in China.
Engraving from Narrative of the Expedition of an American Squadron to the China Seas and Japan, performed in the years 1852, 1853, and 1854, under the command of Commodore M.C. Perry, United States Navy, 1856.
Detail of East India Archipelago, Western Route to China, Chart No. 5, showing Macao, the Canton River, and Hong Kong. Whampoa Reach was as high as trading vessels were allowed to sail on the Canton River.
The steamer Sedgwick was built at the Barbour Yard in Brewer in 1892, to carry passengers from Bangor to towns on the Eggemoggin Reach. Barbour was one of few Penobscot Bay area shipbuilders to build steam vessels in the nineteenth century.
An etching of the Carter Shipyard in Belfast on the 1855 Map of the City of Belfast, Waldo County, Maine. A ship is ready for launch, while the one in the foreground has been framed up and is being planked. The ramp at the bow lets wood be carried in.
Salmon kept a catalogue of his paintings, numbering each painting and indicating where he was when it was painted. This is number 395 which, according to the catalogue, must have been second to last painting he did in 1823 in Liverpool, before he emigrated to Boston.
Many small scale charts provide Loran lines, which indicate the time difference expected between receipt of "master and slave" radio signals in the Loran electronic navigation system. This chart, Penobscot Bay and Approaches, #13302, has four different sets of lines, improving a navigator's chance of getting an accurate electronic fix. Loran receivers indicate by number which signals they are getting, and the navigator finds the numbers and uses them to plot a fix.
This map shows not only the lines of magnetic variation in North America, but also the approximate location of the north magnetic pole.
Called "The Variation of the Compass for the Year 1955," it is from Bowditch's "American Practical Navigator," H.O. Pub. No. 9, 1962, p. 163. Penobscot Bay's variation is approximately 18 degrees west.