Built in 2008, by Inspection Construction Unlimited Incorporated of Amelia, Louisiana (hull # PIW01601L607) as the Tiger Spirit for Tiger Towing Incorporated of Berwick, Louisiana.
In 2013, the tug was acquired by Settoon Towing Incorporated of Pierre Part, Louisiana. Where she was renamed as the Lexi M. Settoon.
In 2017, she was acquired by Savage Marine Services Incorporated of Salt Lake City, Utah. Where the tug was renamed as the Savage Wisdom.
In 2020, Savage Marine Services Incorporated was acquired by the Kirby Corporation of Channelview, Texas. Where the tug was renamed as the Big Bay.
Powered by two, Mitsubishi S6R Diesel engines. With Twin Disc reduction gears at a ratio of 5:1. She is a twin screw tug, rated at 1,200 horsepower.