Shipbuilding and Fleet Repair in the PTO with Sal Mercogliano – Episode 549

Seth Paridon and Jon Parshall bring back maritime historian Sal Mercogliano for a nearly two-hour session on US Navy shipbuilding from the mid-1930s programmes through the Two Ocean Navy Act, plus the often-overlooked world of at-sea fleet repair in the Pacific. This is the unglamorous machinery of war done properly — the industrial backbone that made island-hopping possible and ultimately buried Japan's navy under a tonnage gap Tokyo could never close. If you care about how wars are actually won, this is your episode.

Nearly two hours on US Navy shipbuilding from the mid-1930s programmes through the Two Ocean Navy Act, plus the underappreciated topic of fleet repair and maintenance in the Pacific — the kind of logistics story that actually explains how America won the war. Sal Mercogliano is a maritime historian who knows this material cold, and the discussion gets into the obscure admirals who ran the yards and the staggering production numbers. In a week stacked with Pacific episodes, this is the one that earns top billing: unsexy machinery-of-war content that rewards patient listening.

Seth Paridon and Jon Parshall bring on maritime historian Sal Mercogliano to cover US Navy shipbuilding from the mid-1930s expansion through the Two Ocean Navy Act, plus the overlooked topic of at-sea fleet repair in the Pacific. Nearly two hours on the industrial backbone that actually won the war — the kind of logistics-and-production episode that rarely gets this much airtime but absolutely deserves it. If you care about why the US could absorb losses and keep fighting while Japan couldn't, this is the one.