1663 Marquis of Worcester §16 How to make a Sea-castle or Fortification Cannon-proof.
1841 Ld. J. Manners 18 On furthest ocean's heaving breast meanwhile Ride the sea-castles of our merchant-isle.
1878 Ld. Tennyson iv Till the Spaniard came in sight, With his huge sea-castles heaving upon the weather bow.