Royal Navy infrastructure often grows around an inherited footprint. Portsmouth's first graving-dock site dates to Henry VII's reign and remains in use, although the structure has probably been rebuilt several times. HMS M33 now occupies the dock. A modern naval base can preserve centuries-old capacity while the same footprint restricts later expansion.
Notable Point · 40:51-41:16
Portsmouth's Tudor dock site still serves HMS M33
Portsmouth's first graving-dock site dates to Henry VII's reign and still accommodates HMS M33, although the dock itself has been rebuilt.