Laid down in March 1898 and launched in November, Formidable left the slipway before she was complete so Portsmouth could begin HMS London. The launch was deliberately accelerated because the yard wanted to test the next design's bow armour arrangement without waiting for Formidable's fitting-out work to finish. The interval before her 1901 completion underlines that launching was a production milestone rather than the end of fitting out and trials. Slipway availability, yard infrastructure, and industrial capacity shaped the pace at which a navy could introduce related designs. Portsmouth's ability to overlap construction in this way reveals the industrial depth behind Britain's battle fleet.
Notable Point · 20:38-22:18
Portsmouth yard capacity and rapid class succession
Formidable’s launch before completion shows how British dockyard capacity could clear a slipway quickly for the next battleship class.