Transcriber's Note

Some illustrations contain explanatory text; the keywords have been added to the captions.

The following modifications have been made,

Page [10]:
"3 1-2 inches" changed to "3½ inches"
(some small angle-bars, 3½ inches in width)

Page [36]:
"24 1-2 knots" changed to "24½ knots"
(to accomplish the average speed of 24½ knots)

Page [96]:
"TRANSLANTIC" changed to "TRANSATLANTIC"
(PARTICULARS OF NOTED TRANSATLANTIC LINERS)

Page [145]:
"U. S. N." changed to "U.S.N."
(courtesy of Naval Constructor R. H. M. Robinson, U.S.N.)

Not modified but retained as printed:

Inconsistent spelling of "underwater" / "under-water"

Inconsistent spelling of "watertight" / "water-tight"