Page 8: of Maritime Reporter Magazine (August 1997)

THE AT 7; ICK\ IN» DEFEAT OR THE A \J f,r i C A n Fleet under Bencdi > , -TTRINF I /•/ /•. UP ON F4* IKE ( H* f f $ In via bv\\ 'Jadrn (/Km/id ur>ss: * Eli

SHIPWRECK DISCOVERY 50 years, ice of Lake m Burlington, Vt. searchers has disco a gunboat whii ledict Arnoli i American Revol survey in respoi sak of zebra mus l way to a vessel mi intact by cold wat ft. (125 m) deep,, which bored the treasure foCgmafce it Delivers jjOutcome j ittmk

JN&Vft. (16 ^fll^il^iahboat part of. al 15-ship squadron - schooners t Royal and Reveng^ f|oop £uflbbat<*; We tence, Boston, Spitfii 1 .cutter/Lee?'; and row leys Trumbull, (Congress and ton — led by Arnold, who the one of four to "survive" the Battle of Valcour Island J*hicfc occurred on the lake in October 1776. Jersey ptured by the British and

Congress wreckage as found in 1984, and

Philadelphia, which", was discov- ered in 1935, is no^ s ,- (he , Smithsoniar t •mti'on^l '-Museut

History. m display at

Institution's of American

American naval

Lake Champlain during tionary War before

The eighth what ow White! specification and ough'r defeated, the

Vely thwarted Britain's advance down the Lake -TJiidson River corridor

England from the

Lth^rncolonies; for6- to ?etreat~ into tonty OfA Search

Attempting^to\prevent an inva- sion aontindigenous zebra mus- sels on shipwrecks believed to be ei^o^l^e^ in Lake Champlain, a team of researchers conducted the .ke-wide survey which led to the uj scovery of the last "survivor\of .[_ A Apld's flotillaS ^Organized bj .Champlain Maritime

Mi (;um (LCMM) Director Art

Cc a team consisting of veteran l£l j^r6se|^rchers Capt. Fred

Peter Barranco s with Middlebury :edlogists Patricia and

Tom Manley and set sail on research vessel Neptune, owned an$Jr operated by Capt. Fayette.

The & steel-hulled vessel Empowered by two Chrysler \225 engines and features a Kohler 7.5-kW generator. /

Using a zone and grid system, sections of the lake were divided and survey lines were set one to two milgs -long and 246 ft. (75 m) apafe''Na>ftgatiGftand positioning was achieved through a Northstar 94IX DGPS which, along with a

Cetrek auto pilot system and video platter sfnd a Raytheon R40 raster

Neptune 32.8 ft. (10 m) off the bot- tom; of the lake. A Wesmar SS2645 focjvard-looking sonar was used to protect the transducer and to avoid any obstacles. Primary depth information was collected with a

S^iiruno FCV667 color video

Sdunder.

The heart of the data acquisition system

Id) fleet," rted the covered i than survey t erejpni iletel* tuj 'ifcJ & scan radar system, guided the ves- ventually leading j- sel down each grid line, the colonists. j Geophysical information was col- tiy discovered vessel ] lected and stored using a Klein 595 mar. A dual frequency

VH -W^s, to wed behind

Parasitic Plague Spurs

Historic Find "We have found the mi: boat," remarked Mr. surfacing from an ini ation. His decades research on ArnoL shared with other historians led to the belief that one member of the fleet would be found in La]

Champlain. After a promisi: sonar print out, he plunged in surfaced with news of a pos: identification. "From the a size and outfitting, we know

Philadelphia-class gunboat. The: is no question it is part of t' t P t on -fwWefedf it intact ar " a sailing Cf it vtas not until! ild la^ssel-wll'' m ii;

Cohn's description ^ intact, 54-ft. long gunboa| upright on the bottom of the rca 597 tt scover 1846- e, with a mast standing more than 50 ft. (15.2 m) highYanfr 'a large bow cannon still in place, a ecial ROV survey was imple- mented with the assistance of

Benthos Inc. to further inve the wreck. "The apparently lent condition of the gunboat is highly unusual for an artifact fihis old and is onexof the reasons the discovery is so significant," said . Phillip Lundeberg, curat eritus of Naval History at the ithsonian Institution's erican History Museum. (Continued on page 110)

Maritime Reporter/Engineering News -1$ m • s ' v .4 zsmrm\ mmMssmesz-