Our Collection

At the Institute’s core is the Gilder Lehrman Collection, one of the great archives in American history. More than 70,000 items cover five hundred years of American history, from Columbus’s 1493 letter describing the New World to soldiers’ letters from World War II and Vietnam. Explore primary sources, visit exhibitions in person or online, or bring your class on a field trip.

Unknown [Description of an impregnable floating engine]

High-resolution images are available to schools and libraries via subscription to American History, 1493-1943. Check to see if your school or library already has a subscription. Or click here for more information. You may also order a pdf of the image from us here.

Log in
to see this thumbnail image

Gilder Lehrman Collection #: GLC02437.00233 Author/Creator: Unknown Place Written: s.l. Type: Document Date: circa 1775-1776 Pagination: 1p. ; 31.6 cm. x 12 cm.

A high-resolution version of this object is available for registered users. LOG IN

Gilder Lehrman Collection #: GLC02437.00233 Author/Creator: Unknown Place Written: s.l. Type: Document Date: circa 1775-1776 Pagination: 1p. ; 31.6 cm. x 12 cm.

Summary of Content: Provides both a drawn and written explanation of the design of a vessel "constructed to destroy Barges, Tenders, Ships, Towns, Castles, & Magazines." Made of iron and wood, the vessel has an octangular design "in order to annoy the Enemy upon all Quarters." Notes that the size and artillery can be adjusted. The word "Taliacotius" appears at the end.

Full Transcript: [Excerpt:]
The Bottom or floor of this machine consists of large square pine Beams about 40 feet long...the Walls are made of bolts of hard Timber...secured by strong Bars ...of Iron - the covering or Bomb-proof likewise to be made of such timber as will most resist cannon balls, Bombs &c...Wheels with Cranks to put in motion...2 Tier of Cannon...8 large Swivel Guns ....See More

People:

Historical Era: American Revolution, 1763-1783

Subjects: NavyRevolutionary WarMilitary HistoryArtilleryWeaponrySiege of BostonScience and TechnologyMaritime

Sub Era: Road to Revolution

Order a Copy Citation Guidelines for Online Resources