- Stock #439522 - Clean, Low-Hour Boston Whaler Dauntless 170. Small enough to tow there - Big enough to go there! Legendary Boston Whaler Dauntless 170 with 4-stroke 90 HP Mercury and included trailer. Everything you need to get out fishing or for family fun. This Boston Whaler Dauntless 170 feels bigger than other boats in this size class on the water, while still being an easy-to-tow design. The ideal boat for easy fun and fishing on the water. It's powered by a Mercury 90 horsepower four-stroke outboard motor and has room for up to 7 onboard. There is a bimini top for shade on hotter... read more