Following the rules of the Donut Race, the Taru Tiger is a small boat made out of allowed materials. It was made from three barrels and has two oars for propulsion. Created by Usopp, it does not have anything significantly special.
With Nami making navigation decisions, Usopp's use of an Impact Dial, and Robin's inventive use of her powers it almost won the race. However Foxy'sNoro Noro Beam stopped it long enough for his crew to win.
Originally in the manga, the Taru Tiger was the only boat that the Straw Hats entered for the Donut Race. In the anime, due to the rules of Davy Back Fight and the Donut Race being slightly changed, two other boats accompanied the Taru Tiger. They were the Tarumanma manned by Zoro and Chopper, and the It's Oh Well manned by Luffy and Sanji.
Originally in the manga also, at the starting of the Donut Race, the Taru Tiger was attacked by Foxy Pirates within the audience. In the anime, this was changed to interference from the other Foxy Pirates participating in the race. After the start, for the rest of the race, the boat's path through the course however remained the same as in the manga.