Type H Motor Lifeboat (36ft.)
Self-righting and self-bailing; 36ft. 0in. overall length, 9ft. 6in. beam over fenders, 5ft. 6in. depth amidships above keel, draft 3ft. 2.5in.; 14285lbs./6.38tons displacement; single 50HP/970RPM 4 cylinder/4 cycle Wisconsin J-M gasoline engine mounted in amidships watertight engine compartment, with single propeller; maximum speed 9.2 kts.; two copper fuel tanks of 120gal. and 28gal.; 275 nautical mile cruising range; two-masted dipping lug sailing rig; canvas spray screen mounted on forward air casing covering aft about six feet; four thwarts for eight oars rowed in double-banked configuration; carvel-built wooden hull of single cypress or white pine planking over oak frames, copper and bronze fastened; watertight wooden end air cases forward and aft above watertight main deck, with six watertight bulkheads/twelve watertight compartments; 1800lb. molded cast iron keel; self-bailing within 16sec. by means of four freeing trunks (two each side around engine compartment) through bottom; self-rights in 7sec. A total of 76 lifeboats of this type were built by the Coast Guard’s Curtis Bay Yard over the years 1918 to 1928.