Hudson River Chain

The Hudson River Chain may refer to any of several chains used as a blockade across the Hudson River between New York and New Jersey, intended to prevent British naval vessels from entering the river during the American Revolutionary War.

The Great Chain (1778-1782)

In the spring of 1778, the most notable of all these obstructions, a heavy chain supported by huge logs, was stretched across the Hudson from West Point to Constitution Island, opposite. It was constructed at the Stirling Iron Works, in Warwick, Orange County, by Peter Townsend, under the supervision of Timothy Pickering. The task was completed in six weeks.

The Hudson River's narrow width and sharp turns at West Point created adverse sailing conditions and prompted construction of The Great Chain in 1778 as an obstacle to the movement of British Ships north of West Point. West Point was chosen for the placement of The Great Chain because of the distinctive "S-Curve" the Hudson makes there, which would force any large ship to slow down in order to navigate it, thus making the ship an easier target.

American soldiers positioned the chain to impede the progress of a ship should it attempt to turn into the east-west channel against frequently unfavorable winds and a strong current. Due to the Lower Hudson River actually being an estuary, it is subject to significant tidal currents which make navigation by sailing vessels particularly difficult. Cannons were placed in forts and batteries on both sides of the river to destroy the ship as it slowed to a halt against the obstacle.

) were stapled across each raft and later, in the river, the chain sections were united.

On 30 April 1778, Captain Thomas Machin, the Artillery Officer and engineer responsible for assembling and installing the obstruction, oversaw the extension of the chain across the river. Its northern end was anchored to Constitution Island and the southern end was secured to a small cove on the western bank of the river. The Constitution Island side was protected by Marine Battery and the emplacement on the West Point side was protected by Chain Battery. "Chevaux-de-frise" were also placed in the channel between Pollopel's Island and the western shore of the river, just above the North Gate of the Hudson Highlands.

Both ends were anchored to log cribs filled with rocks, keeping the ends in place. A system of pulleys, rollers, ropes, and mid-stream anchors adjusted the chain's tension to overcome the effects of river current and changing tide. Until 1783, the chain was removed each Winter and reinstalled each Spring to avoid destruction by ice.

A log "boom" (resembling a ladder in construction) also spanned the river about 100 yards downstream (south of the chain) to absorb the impact of a ship attempting to penetrate the barrier.

The British never attempted to run the chain; but "In the course of his correspondence with the British, Benedict Arnold claimed that a well-loaded ship could break the chain." [ [http://www.unc.edu/~chaos1/chain.html The Great Chain] ] Peter Townsend received a great sum of money from the Continental Congress for manufacturing the chain.

The greater system of fortifications at West Point, of which the chain was part, was designed and built by Polish Engineer Tadeusz Kościuszko. George Washington was responsible for delegating this responsibility.

After the Revolution, the portion of the Chain not saved was "relegated to the West Point Foundry furnaces near Cold Spring, New York, to be melted down for other uses." [ [http://www.hudsonriver.com/halfmoonpress/stories/0298link.htm The Chaining of the Hudson] ] The portion of the chain that was saved was first displayed at the West Point ordnance compound along , New York.

John C. Abbey, and later Francis Bannerman, made profits from counterfeited chain links sold to collectors and museums. [ [http://www.hudsonriver.com/halfmoonpress/stories/0298link.htm The Chaining of the Hudson -- And Profiteering on History] ]

Fort Washington's "Chevaux-de-Frise" (1776)

This barricase was not a chain, but actually a "chevaux-de-frise" that was sunk underwater with the intention of sinking any British ships that passed over it. It was placed south of West Point between Fort Washington, on the island of Manhattan, and Fort Lee, across the river in New Jersey. However, an opening was left for the passage of American ships, and the British obtained its location with the help of a local inhabitant. The British were well aware of its existence, and successfully passed the barrier several times [Diamant, Chaining The Hudson 1989] . Fort Washington was captured on November 16, 1776, rendering the barrier useless.

Fort Montgomery Chain (1776-1777)

A chain and boom were stretched across the river from Anthony's Nose to Fort Montgomery, at the lower entrance to the Highlands, just North of the modern day Bear Mountain Bridge. Fort Clinton was just South of the Chain, also on the West Bank of the river, on the opposite side of Popolopen's Kill (or Popolopen Creek). Captain Machin, the officer who would later be responsible for the emplacement of the Great Chain at West Point, also headed this effort. In November of 1776, a faulty link broke under stress induced by the river tides, highlighting some of the difficulties in the first attempt to run a chain across the Hudson [Diamant, Chaining the Hudson, 1989, pg 105] . It was repaired and reset however. The capture of Fort Montgomery and Fort Clinton by the British on October 6, 1777, allowed them to dismantle the chain [http://www.scribd.com/doc/279854/West-Point-Fortifications West Point Fortifications] and raid upriver as far as Kingston, New York.

Governor Clinton saw a positive aspect to this loss in that the British never attempted to run ships through the chain, risking everything to capture the forts and take down the chain. [Diamant, Chaining the Hudson, pg 122] It seemed as though the basic idea of obstructing the river seemed sound, and after Captain Machin recovered from his wounds, he would begin work on the stronger Great Chain at West Point.

Pollepel Island's Chevaux-de-Frise (1776-1777)

Despite the failure of the chevaux-de-frise at Fort Washington, another was constructed between Plum Point and Pollepel Island, North of West Point. The defenses of the obstruction were never fully completed, and its importance was overshadowed by the Great Chain at West Point.

Bibliography

*Hudson River Chain. "Harper's Encyclopedia of United States History", Vol. IV, p.447, Harper & Brothers Publishers, 1905.
*Information plaques at Trophy Point at West Point, New York.
* [http://www.scribd.com/word/full/279854?access_key=8lqkwxm8f7hso West Point Fortifications]
*U.S. Military Academy Department of History's "West Point Fortifications Staff Ride Notecards," second edition (1998)

References

External links

* [http://www.hudsonrivervalley.org/books/Chainandboom.pdf The Chain and Boom By Merle Sheffield]
* [http://www.scribd.com/doc/279854/West-Point-Fortifications West Point Fortifications]
* [http://www.unc.edu/~chaos1/chain.html The Great Chain]
* [http://www.hudsonriver.com/halfmoonpress/stories/0298link.htm Chaining of the Hudson in 1778]
* [http://www.hhr.highlands.com/chain.htm The Great Chain]
* [http://books.google.com/books?id=bkNjv-9mqocC&dq=hudson+river+chain&pg=PP1&ots=zjZCLbiWIE&source=citation&sig=nclbMkm9_8S19XoAhvXyZTS3Av8&hl=en&prev=http://www.google.com/search?q=hudson+river+chain&btnG=Search&hl=en&safe=off&sa=X&oi=print&ct=result&cd=2&cad=bottom-3results#PPP1,M1 Chaining The Hudson]
* [http://www.hudsonrivervalley.org/presscenter/newsLetters/gw2nypc.php George Washington's letter about the strategic importance of the Hudson]
* [http://www.hudsonrivervalley.org/amerRevLesson/chainscript.php Contract for the forging of The Great Chain]
* [http://query.nytimes.com/mem/archive-free/pdf?_r=1&res=9E02E0D7123DE433A25754C1A9649C94649ED7CF&oref=slogin New York Times Article about The Chain February 17, 1895]
* [http://0-proquest.umi.com.usmalibrary.usma.edu/pqdweb?index=2&did=418908351&SrchMode=1&sid=2&Fmt=10&VInst=PROD&VType=PQD&RQT=309&VName=HNP&TS=1209062496&clientId=2640 Chain Salvaging Blurb]
* [http://www.jstor.org/sici?sici=0026-3931(195522)19%3A2%3C81%3ARWP%22KT%3E2.0.CO%3B2-Z Revolutionary West Point: "The Key to the Continent"]