Bermuda's floating dock as strategic mobility

Bermuda's position made it critical to the Royal Navy's North America and West Indies station, but the size of its floating dock determined which warships the base could support. The original dock was replaced in 1906, and its successor received the formal Admiralty Floating Dock No. 1 designation in 1925. The first dock was designed for ironclads of roughly 10,000 tons and could accept a vessel longer than itself if the load was balanced correctly. HMS Warrior and HMS Black Prince towed it across the Atlantic, with HMS Terrible acting as a steering guide astern. A mobile dock avoided some difficulties of Bermuda's porous geology and could be removed if a permanent base became politically troublesome after the American Civil War. One movable structure answered engineering, diplomatic, and station-strategy needs at the same time.