Dutch tug Neptunus built at Rotterdam, Netherlands in 1899 according to the Dutch magazine Scheepvaart dated 6 January 1900

A list of the ships launched in 1899 reported the Dutch tug Neptunus of 52 tons and horsepower of 150 ihp by P. Smit Jr., Rotterdam, Netherlands for account of the Nederlandschen Stoomsleepdienst, Rotterdam.