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Argonaut, sectional view submerged, 1901. Man in conning-tower making observations. Second man steering the third wheel which rests on the ocean bottom. Water tanks are filled when descending and pumped dry when ready to come up.

Argonaut, sectional view

Argonaut, sectional view submerged, 1901. Man in conning-tower making observations. Second man steering…

Argonaut, side view submerged, 1901. Key: C-driving wheel, E-rudder and guiding wheel, G-air lock, K-compartment for searchlight, L-forward lookout compartment, M-gasoline tanks, N-compressed air reserve, O-water ballast, S-conning-tower, T-compass, U-outside steering gear.

Argonaut, side view

Argonaut, side view submerged, 1901. Key: C-driving wheel, E-rudder and guiding wheel, G-air lock, K-compartment…

"Torpedo Boats are small vessels built for speed and fitted with tubes for firing torpedoes by either compressed air or gunpowder. They can be used on the surface or submerged to do their work unseen beneath the water. A, storage batteries; C, bulkheads; E, vertical tubes, with horizontal propellers; G, rudders; H, horizontal fin; M, electric motor; R, water tanks; P, weight to be dropped in an emergency. "—(Charles Leonard-Stuart, 1911)

Electric Torpedo Boat

"Torpedo Boats are small vessels built for speed and fitted with tubes for firing torpedoes by either…

An illustration of a man and woman walking in front of a rebel torpedo boat.

Torpedo Boat

An illustration of a man and woman walking in front of a rebel torpedo boat.

Robert Fulton (November 14, 1765 – February 24, 1815) was a U.S. engineer and inventor who is widely credited with developing the first commercially successful steamboat.

Robert Fulton

Robert Fulton (November 14, 1765 – February 24, 1815) was a U.S. engineer and inventor who is…

A Holland submarine torpedo boat, devised by John P. Holland with the U.S. Navy.

The Holland Submarine Torpedo-Boat

A Holland submarine torpedo boat, devised by John P. Holland with the U.S. Navy.

A man on a ship "paying out" the cable.

"Paying Out" the Cable

A man on a ship "paying out" the cable.

A sounding machine on a cable steamer.

Sounding Machine

A sounding machine on a cable steamer.

Sectional view of a submarine.

Submarine

Sectional view of a submarine.