Block building as dispersed wartime ship production

How much could block building have accelerated British wartime ship construction?

Canal-connected factories could build sections around the clock and perhaps quadruple construction speed for small ships such as corvettes.

Factories away from the major shipyards could build complete sections of Flower-class corvettes under cover. Barges on the canal network could then carry those blocks to assembly yards. Dispersed factories would widen the labour pool, protect work from weather and support round-the-clock production. The stream estimates that construction speed might have quadrupled, while making clear that the result would be a swarm of small ships rather than an equal increase in complex capital ships.