Wiktionary
hull-up
a. (context nautical English) Of a ship at a distance that the hull is visible above the horizon
Usage examples of "hull-up".
The chase had been hull-up since the middle of the forenoon watch.
By this time the Desaix was hull-up - had been for some time - and so was the Formidable: behind the flagship there showed the topgallants and topsails of the Indomptable, and out to sea, a couple of miles to windward of her, the frigate's sails nicked the line of the sky.
Converge they did, and with surprising rapidity: at pudding-time the word came down that they were hull-up from the deck.