American whaler Loper departed to sea in 1821

Biodiversity Heritage Library

Of Nantucket, master William H. Coffin, departed on 20 August 1821 to the Pacific Ocean, returned on 14 August 1823 1.671 barrels sperm oil.  

Source

Catalogue of Nantucket Whalers and their voyages from 1815 to 1870. Hussey&Robinson, Nantucket, 1876.