turtle-back

She was to have two separate parallel hulls under water; above she was of turtle-back shape.

The Illustrated War News, Number 21, Dec. 30, 1914 Various

Ken thanked him gratefully, and they both went forward, and there, leaning against the gray steel of the little turret, with the small waves lapping over the turtle-back forward, Ken told his father how their strange meeting had come about.

On Land and Sea at the Dardanelles

Her small bridge, with its 12-pounder gun, steering wheel, compass, and engine-room telegraphs, was placed on the top of the turtle-back and about 25 feet from the bows.

Stand By! Naval Sketches and Stories 1925

She had a low, sharp bow and the old-fashioned turtle-back forward instead of the high, weatherly forecastle of the later destroyers, and in anything more than a moderate breeze or a little popple of a sea she was like a half-tide rock in a gale o 'wind.

Stand By! Naval Sketches and Stories 1925

As the troop ship glided down the sea lane, the old man still watched it from the turtle-back.

II. Book Four: The Voyage of the Anchises 1922

She rested upon her stage, a great, sleek bronze ship, low and rakish, with pointed ends and a flattened, arched turtle-back dome of glassite covering the superstructure and the decks from bow to stern.

Wandl the Invader Ray Cummings 1922

A long, narrow car; yet with its turtle-back and its propelling gas-tube at the rear, with a rudder on each side of the tube, I realized that it was designed also for sub-sea travel.

Tarrano the Conqueror Ray Cummings 1922

They had made up their minds to see a turtle-back deck with a narrow level platform in the centre; instead they found that the deck was almost flat and, in nautical parlance, flush, save where it was broken by the elongated conning-tower topped by the twin periscopes and slender wireless mast.

The Submarine Hunters A Story of the Naval Patrol Work in the Great War Edward S. [Illustrator] Hodgson 1917

Those old-time turtle-back vehicles had outside a small single seat for the coachman only.

Social life in old New Orleans : being recollections of my girlhood, 1912

Ladies going back and forth and gentlemen of leisure used their own conveyance, a turtle-back affair that was entered by a row of steps.

Social life in old New Orleans : being recollections of my girlhood, 1912