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NavSource Online: Submarine Photo Archive

Defender


Introduction courtesy of simonlake.com.
The Defender was designed and built by Simon Lake in 1907 for military and commercial use. It could operate independently or in conjunction with a surface vessel (mother ship). One purpose, was to demonstrate to the U.S. Navy the value of a divers' compartment with an exit hatch as a means of escape if the submarine was sunk; as well as for use in rescue missions on other sunken vessels. The submarine was equipped with 3 torpedo tubes, two fore ward and one aft.
At a later time, Simon designed a rescue attachment which was a tube-like apparatus that connected from the divers hatch to the outer hull of a sunken vessel. The tube filled with compressed air, the work crew could cut through the hull and thus provide an escape route for the trapped sailors. With the escape hatch the Defender could also be used for mine laying, or cutting mine cables and came fully equipped with dive gear, tanks, tools, air hoses, welding lines, etc.

Specifications:
Overall Length: 92'
Beam: 13'
200 Ton Displacement.
With 10 man crew accommodations

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SizeImage DescriptionContributed
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Defender 110k Submarine Defender as rebuilt with sharply raked bow, and her topsides changed, ready for launch at Lake's Bridgeport base. Above her twin propellers is the shutter of a stern torpedo tube. Lake's characteristic pair of amidships planes have been folded up (they are forward and abaft the big conning tower). Photo Submarine Force Museum and Library & submitted by Robert Hurst.
Text courtesy of U.S. Submarines Through 1945, An Illustrated Design History by Norman Friedman. Naval Institute Press.
Defender 109k Submarine Defender, circa 1906 at Newport News, VA. She was launched on 27 February 1906. Text info courtesy of Darryl Baker.
Photo courtesy of James Price, former STS, 81-84 617B.
Henry Ford 922k LATEST LAKE SUBMARINE CRUISER DEFENDER, WILL BE A MARVEL OF MECHANICAL INGENUITY AND DESTRUCTIVENESS
Invention Turned Down by United States Gains Remarkable Victory Over Competitors in Fair Contest in Foreign Waters
Photo # 3b36330r, LC-USZ62-89963, courtesy of memory.loc.gov.
Image and text provided by Library of Virginia; Richmond, VA.
Photo from Daily Press. (Newport News, Va.) 1896-current, 08 April 1906, Image 4, via chroniclingamerica.loc.gov.
Defender 52k The crew of the Defender topside circa early 1900's. Photo # 3b36332r, LC-USZ62-89965 by Lake Torpedo Boat Company.
George Grantham Bain Collection (Library of Congress), courtesy of memory.loc.gov.
Photo i.d. courtesy of Ric Hedman & Dave Johnston (USNR).
Defender 350k Postcard of the Defender. Photo courtesy of Arnold Putnam.
Defender 452k AIRSHIPS TO FIGHT SUBMARINES
AERO CLUB OFFICIALS ON BOARD THE LAKE SUBMARINE BOAT
Image and text provided by University of Hawaii at Manoa; Honolulu, HI.
Photo from The Hawaiian Star. (Honolulu [Oahu]) 1893-1912, 10 May 1907, SECOND EDITION, Image 1, via chroniclingamerica.loc.gov.
PDF added 07/11/14.

Crew Contact And Reunion Information
Not Applicable to this Vessel
Additional Resources and Web Sites of Interest
Lake Submarine: The Defender, built in 1907
WORLD SUBMARINE HISTORY TIMELINE 1580-2000

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