The Brooklyn Navy Yard is in the early stages of a more than $100 million renovation, one its overseers hope will give a further boost to the long-neglected former shipbuilding site, which has bounced back in recent years and now has more than 200 tenants. Demolition is to begin early next year on Building 128, a former machine shop as big and hulking as an airport hangar; three new buildings are planned in its place.

Elsewhere in the 300-acre industrial park, which sits along the river between Williamsburg and Dumbo, and half-dozen projects are in the works. There hasn