The plaque at this forlorn site tells us that on May 27, 1775 nearby was fought the Battle of Chelsea Creek. It is also known as the Battle of Noddle's Island, on which now sits Logan Airport. Colonel John Stark, who later proved pivotal at Bunker Hill and Bennington, according to the sign, "successfully engaged the British regulars in driving livestock from Hog and Noddle Islands."
We see Chelsea Creek (shown on certain maps as Chelsea River). The plaque, at the far right of the image, tells us we are in the area of the engagement by Stark, and calls this "the Colonies' first victory of the American Revolution," including affording it the status of the first naval engagement of the war.
A minor escapade involving foraging and the successful downing of one vessel continues in the public imagination as a military victory.