Lynch Shipbuilding operated during a transitional period in American maritime construction. Wooden ships had been the backbone of civilian and military fleets for centuries, but the twentieth century increasingly favored steel — stronger, more durable, and by mid-century, not significantly more expensive when industrial manufacturing was applied at scale. Wooden construction retained advantages for certain vessel types: smaller craft, boats requiring shallow draft, vessels built in regions without major steel infrastructure. San Diego's industrial base in the 1930s had carpentry and timber skills developed from the fishing and pleasure-boat industries concentrated on the bay. Lynch Shipbuilding drew on those skills, building a yard capable of producing wooden vessels for commercial and eventually military customers.

World War II transformed Lynch Shipbuilding as it transformed every American industrial enterprise. The federal government needed vessels — rescue tugs to recover damaged ships and downed aircraft, coastal transports for inter-island logistics in the Pacific, small craft for amphibious operations. Lynch delivered. The company's contracts included rescue tugs and coastal transports that served in the Pacific theater, workhorses of the naval auxiliary fleet that rarely appeared in official histories but made the larger war effort possible. The urgency of wartime production — the pressure to build fast and build more — gave small yards like Lynch a viability they might not have sustained in peacetime. The wooden vessels they produced were practical instruments of a war being fought across oceans.

Lynch Shipbuilding was sold in the late 1940s and its operations were absorbed into Martinolich Shipbuilding Company, which continued bay operations as a repair rather than new-construction facility. Repair work is steadier business than new construction: ships always need maintenance, and San Diego Bay's growing naval presence guaranteed a customer base. The eventual successor to both operations was the National Steel and Shipbuilding Company (NASSCO), which took shape in the late 1950s from this same stretch of San Diego waterfront and built on the bay's accumulated maritime industrial tradition to become the last major new-construction shipyard on the West Coast.

The waterfront geography that Lynch Shipbuilding occupied — the eastern shore of San Diego Bay south of downtown — has been the city's industrial waterfront for over a century. The bay's sheltered waters and proximity to naval bases made it naturally suited for ship construction and repair. As Lynch gave way to Martinolich and then NASSCO, the same patch of shoreline remained devoted to the same purpose, even as the technology, the scale, and the corporate ownership changed completely. The wooden tugs Lynch built in the 1940s were replaced by steel cargo ships and naval vessels that would have been unrecognizable to the carpenters who built them. The harbor they were built on remained the same.