Tradewinds Marina is located on beautiful Storm protected Frog Mortar Creek, off of Middle River in Baltimore County, MD. Easy to locate by land also: just minutes from I 95 or 695 Baltimore Beltway. Tradewinds Marina is a full service marine offering: Crevalle boat sales, brokerage sales, slips up to 45 feet, Boat lift lips, Ground storage, full mechanical service, factory trained technicians for Volvo Penta, Mercruiser, and Mercury Outboards.