Anker (unit)
An Anker was a Dutch unit of capacity for wine or brandy equal to 10 US gallons that was used as a standard liquid measurement. It was most commonly used in Colonial times in New York and New Jersey, thanks to the earlier Dutch settlement of New Amsterdam.
Many European countries had a different measurement of this unit that varied from 9 to 11 US gallons .Conversion
1 Anker ≡ 10 US gallons
1 Anker ≡ 0.03785411784 m3