Our History



In the summer of 1984 Philip Masters, the Company’s late founder and President completed course training in shipwreck research and archaeological diving given jointly by Ray McAllister, then Professor of Ocean Engineering at Florida Atlantic University, and the noted, now deceased, nautical archaeologist Peter Throckmorton.

In the summers of 1985 and 1986, Mr. Masters worked as project historian and diver on the excavation of HMS Feversham, a 1711 Royal Navy frigate lost off Cape Breton, Nova Scotia (In 1989, Mr. Masters research was key in establishing chain of provenance for many of the coins recovered from Feversham) .

By the fall of 1985, Mr. Masters decided to seek a suitable shipwreck to research, survey for, locate, excavate and eventually market.  Well aware of the political and legal problems usually encountered by salvors in dealing with foreign governments, he was determined to select a vessel that had wrecked in the waters of a U.S. state which had a fair and equitable permitting program in place.  Mr. Masters also knew that, in order to attract risk capital, it had to be a ship lost with a cargo valuable enough to produce a substantial return on investment.           

Mr. Masters started out by searching through two well-known “shipwreck” books, The Treasure Diver’s Guide by John S. Potter Jr. and Shipwrecks of the Western Hemisphere by Robert Marx.  By early 1986, Mr. Masters’ interest had narrowed down to the 1750 Spanish treasure fleet.  According to the two books, the fleet’s seven ships had been caught in a hurricane while sailing from Havana to Spain, and had wrecked on the Outer Banks of North Carolina and Virginia.  According to the Potter book, one named El Salvador had been lost while trying to enter Beaufort Inlet with a cargo of at least 200,000 pesos in Spanish silver.

In the spring of 1986, Mr. Masters researched the 1750 fleet at the University of Florida libraries in Gainesville, the North Carolina State Archives in Raleigh, the University of North Carolina libraries in Chapel Hill, the Library of Congress in Washington D.C., and the 42nd Street New York Public Library.  By early summer, his interest had narrowed to the two ships in the fleet that had apparently not been re-floated or salvaged by the locals: Nuestra Senora de La Soledad and El Salvador.

In July 1986, Mr. Masters spoke of his interest in the 1750 fleet to his mentor at the University of Florida, historical archivist Bruce Chappell.  Mr. Chappell teaches Spanish paleography – the art of reading archive documents – to graduate students preparing to do research at the Archivo General de Indias (“AGI”) in Seville, Spain.  Mr. Chappell introduced Mr. Masters to a student who was about to leave for Seville, and arrangements were made for a part-time effort to research the losses of La Soledad and El Salvador.  To pay for the AGI research, Mr. Masters enlisted the aid of his long-time friend, Dr. Allan Fields, a surgeon in Hollywood, Florida.  The researcher was instructed to concentrate on: 1) the breakdown of cargos aboard both vessels; 2) the location of each wreck; and 3) evidence of any immediate salvage efforts.

In October 1986, Mr. Masters received a report from Seville indicating that La Soledad’s crew had recovered virtually all of her treasure, but that nothing had been recovered from El Salvador.  Two weeks later, the Company’s researcher reported finding a document saying that El Salvador’s consignment of crown treasure consisted of sixteen chests of silver and four chests of gold.  Two other AGI documents said she was stranded and torn apart on an offshore sandbar fifteen leagues (forty-five miles) down the coast from Ocracoke Inlet.  As a follow-up, the researcher also visited archives in Simancas, Spain, uncovering some of the diplomatic correspondence that flowed between Madrid and London following the 1750 fleet disaster.

In November 1986, Mr. Masters met with the Director of the Underwater Archaeology Unit (now Branch) of the Division of Archives and History of the North Carolina Department of Cultural Resources (DCR)  At that initial meeting, Mr. Masters was advised of research done by NC Maritime Museum Historian David Moore, indicating that a shipwreck of great historical significance, Blackbeard’s 1718 flagship, Queen Anne’s Revenge (QAR) may have also been lost at Beaufort Inlet. 

In January 1987, DCR issued a permit to search for El Salvador along six miles of coastline, with Beaufort Inlet at the center.  At the same time, Mr. Masters had begun researching the loss of QAR, following up on David Moore’s research.  He essentially re-visited the same libraries and archives visited in the original 1750 fleet inquiry.  In the process, Mr. Masters also double-checked all his previous research on El Salvador, and began acquiring a collection of copies of early charts of the Beaufort Inlet-Cape Lookout area.  During 1987, he also visited the state archives and numerous smaller repositories in the Carolinas and Virginia.

In the late spring of 1987, in the Rare Book Room at the New York Public Library, Mr. Masters located the deposition of pirate David Harriott in the appendix of a book published in London in 1719.  Harriott gave an eyewitness account of the loss of QAR and Adventure that confirmed that the two pirate ships had been lost “off of the Outer Bar” at Beaufort Inlet.

   Founding of Intersal


In early 1988, Phil Masters and his long-time friend Dr. Allan Fields enlisted the aid of attorney Louis J. Pleeter, accountant Glenn R Haft, and others.   Intersal Inc. was incorporated in Florida with an expressed goal of helping to increase knowledge and awareness of America’s rich maritime heritage by researching, locating and excavating valuable historic shipwrecks. Presentations were made to prospective investors, and funds were raised to allow for commencement of field operations in the fall of 1988.

For approximately one month in 1988, and again in 1989, Intersal conducted preliminary magnetometer survey operations in the shallower portions of the target area.  Many groups of anomalies (possible shipwreck sites) were electronically pinpointed for follow-up sand removal and diving investigation.

From January 2nd to April 18th, 1989, Mr. Masters studied at the University of Florida in Gainesville. He took a course in intensive Spanish, and on nights and weekends his friend Professor Bruce Chappell trained him in Spanish paleography.  On April 20th, Mr. Masters flew to Europe, where he researched the 1750 fleet and El Salvador at the AGI in Seville for four weeks.  From there, Mr. Masters flew to London, where he worked for another three weeks on the losses of QAR, Adventure, and El Salvador, at the British Public Record Office (PRO) and other major repositories.  Mr. Masters returned from Europe in early June 1989 satisfied that the bulk of the Company’s research effort had been completed. 

In 1990, Pelican III, a forty-two foot steel-hulled crew boat powered by two large diesel engines, was purchased, refitted, and equipped with twin twenty-six inch diameter custom-built prop-wash diverters.  

In 1991, a dispute arose as to ownership of the state permits, requiring that fund-raising and field operations be suspended until Intersal’s right to the permits could be re-established.  In 1995, DCR confirmed Intersal’s clear title to the permits.

In 1999, Mr. Masters returned to Europe and visited the AGI in Seville, the AHP in Cadiz, and the PRO, just outside London.  This follow-up effort confirmed all previous conclusions.  

In 2001, Intersal Director of Operations John Masters traveled to Havana, Cuba to conduct research connected with QAR; and to arrange for additional research concerning El Salvador, to be performed in the Cuban archives. These efforts were suspended after 9/11/2001.

pile-11Queen Anne’s Revenge Discovery

In 1996, Intersal continued search operations at Beaufort Inlet based on Phil Masters’ research. Intersal’s salvage vessel, Pelican III, began Magnetometer survey and follow-up diving operations at Beaufort Inlet on November 11, 1996.  Ten days later, the Intersal crew discovered the QAR site just over a mile off Bogue Banks, at a depth of twenty-two feet.  The site lies almost due south of Ft. Macon, well within Intersal’s permit area.  The identity of the site was confirmed by the number and size of the cannon and anchors exposed on the sand bottom, and by examination and dating of the various artifacts recovered. 

The initial collection included a bronze bell inscribed with the date of 1705, the brass barrel of a blunderbuss (circa 1690-1710), a lead cannon apron, a lead sounding weight, and two iron cannonballs.   Subsequent excavations have resulted in the recovery of thousands of artifacts, all supporting the conclusion that the wreck is QAR.  They include: at least 24 iron cannon (one dated 1713) and some cannonballs; a small “signal” cannon (very likely fired at some point by Blackbeard himself); a coin weight with the likeness of Queen Anne on it; numerous pewter platters and plates, and one pewter medical syringe (which still contained traces of Mercury); some of the brass parts and accessories of a then-sophisticated surveying instrument; three intact onion-shaped wine bottles; tens of thousands lead musket-balls and mini-balls; a number of ceramic shards; hundreds of  so-far unidentified conglomerations of material known as “encrusted objects” (“EOs”) or “concretions”; several surviving sections of the ship’s hull including its massive sternpost; trade beads, and a small quantity of gold fragments.   

Phil Masters’ research indicates that when QAR and Adventure became stranded in June 1718, the pirates had sufficient opportunity to unload most, if not all, of the valuables aboard before abandoning the two vessels.   Soon after QAR’s discovery, Intersal began discussions with the North Carolina Department of Cultural Resources (DCR) concerning the future of the shipwreck.

On March 3, 1997 Intersal and DCR held a joint news conference in Raleigh at which then Governor Jim Hunt made the announcement of QAR’s discovery.  The response was remarkable. Intersal representatives were interviewed by electronic and print media from across America, and from Canada, Great Britain, France, Germany, Austria, Spain, South America and Australia.  Pieces were seen and/or heard on Good Morning America, Today, CNN, Discovery, NPR, the BBC and many others.  Stories were featured in People Magazine and in hundreds of newspapers across America, most prompted by articles appearing on the AP wire, in the New York Times, and in USA Today.  There was considerable coverage in Great Britain, prompted by an article in the London Times.

In August 1998, 20 months after the initial discovery of QAR, Intersal signed a Memorandum of Agreement (“MOA”) with DCR. In 2013 Intersal, Nautilus Productions and DCR signed the QAR Settlement Agreement, by which Intersal has rights to all commercial narrative accounts of the QAR Project, and the right to make both limited edition and collectable replicas of QAR Artifacts.


The historical record indicates that El Salvador was swallowed up within the deep and shifting sands which abound off the Outer Banks.  The best tool available to locate a site expected to be buried under sand is the magnetometer, or “mag,” which registers the iron components – such as cannon, anchors, weapons, and ship’s fittings – present in every shipwreck site.  The mag head, or “fish,” is towed behind the survey vessel at the end of a cable.  A laptop computer in the vessel’s cabin records any distortions – known as anomalies – in the earth’s magnetic field in the vicinity of the mag head, indicating the probable presence of ferrous metals (iron objects).

Intersal determined that the most reliable and efficient way to locate El Salvador is to start by conducting a precise, all-encompassing magnetometer survey of the target area.  To that end, in 1998, Intersal bought a state-of-the-art magnetometer built by Geometrics Inc., of San Jose, CA; and also purchased and interfaced a sophisticated computer acquisition and survey analysis system.  This system was installed on Anomaly, a twenty-six foot Fiberglass-hulled Bertram. The resulting magnetometer contour charts were designed to locate and display the relative size of every probable shipwreck site in the area surveyed.  

The system was so effective that in the fall of 2000 the US Army Corps of Engineers requested that Intersal conduct the required magnetometer survey of their proposed new dredging dump zone near Beaufort Inlet.

Utilizing Intersal’s magnetometer survey system, remote sensing operations began in early November 1998.  Follow-up diving operations to investigate the most likely targets indicated on the Company’s magnetometer survey charts commenced in July 1999.

As each section of the target area was surveyed by Anomaly and her electronics, the magnetic contour charts of that section were studied and indicated anomalies evaluated; their exact coordinates were recorded, and – much like a hurricane – given a working code name.    

Anomaly re-located potential sites by dropping a lead weight attached to a floating buoy directly on the coordinates as indicated by the DGPS. A diver carrying the underwater hand-held magnetometer swept the bottom in the immediate area, and the lead weight is moved to center of the anomaly.  If debris were visually observed and identified as not being eighteenth century, then the site information was recorded and the next site was checked.  If nothing was visually observed, Pelican III was anchored over the site and positioned so that her prop-wash diverters would “blow a hole” in the sand under the lead weight.      

The state permits allow the recovery of sample artifacts to determine each site’s age and, if possible, its identity.  As each anomaly is investigated, the specific coordinates and description of the artifacts encountered are noted; items without the potential to be diagnostic are left in place. Sites that are confirmed to contain 18th Century artifacts are added to the data base of 18th Century material discovered along the Debris Trail. 19th & early 20th century site are added to the overall database of sunken objects discovered by Intersal since 1989. Post WWII wrecks are evaluated for their commercial salvage potential.

On November 16, 1999, Intersal divers encountered major components of an eighteenth century site – code-named “Maria” – in the target area.  For five weeks following the discovery, Intersal studied the site in cooperation with scientists from the state Underwater Archaeology Branch (“UAB.”)  No cannon or ballast stones, which would suggest the heart of a wreck site, were seen.  Two large anchors (one eleven feet long, with most of its wooden stock intact) and one smaller anchor (about six feet long) were observed, along with a variety of encrusted objects, some of which appeared to be rudder fittings.  Artifacts recovered on the Maria site before operations were suspended on December 21st include various parts of ship’s rigging, plus an iron cannonball, a pewter spoon, and part of a brass buckle.

Maria is within a half mile of the Queen Anne’s Revenge (QAR) site, forcing Intersal to initially consider the possibility that Maria was a major component – perhaps part of the stern – of QAR.  However, the artifacts found seem to indicate that Maria is part of El Salvador or some other eighteenth century vessel.  In any case, there is little doubt that Maria represents a portion of a large ship lost between 1650 and 1800.  

Intense magnetometer surveys of Maria and surrounding area were the first order of business in 2000.  The resultant charts indicated that there were no worthwhile groups of anomalies within five hundred feet of Maria.  The Company decided to conduct an intense survey of Maria with a gradiometer (a very sensitive, dual sensor magnetometer) in an attempt to help us determine the site’s size and shape.  The hope was that this would allow us to pinpoint the center of the site, or to follow a trail leading to a ballast pile.

Intersal vessels and divers returned to the Maria site on March 24, 2000.  Two adjacent fifty by one hundred and fifty-foot grids (marked by tape measures tied to ropes stretched about a foot off the bottom between 2” PVC pipes anchored vertically into the sand at twenty-five foot intervals) were surveyed in and established on the bottom.  Vessel moorings were posted just outside the corners of the overall one hundred by one hundred and fifty-foot grid by screwing four large screw-eyes deeply into the bottom.  From there, a strong rope lead to a buoy on the surface and another rope lead to a grid corner on the bottom.  It was necessary to position the dive vessel exactly over the area to be surveyed each day, because the gradiometer (on a sled and trailing its umbilical cable) had to be manhandled around on the bottom by divers outfitted with wireless com gear.  It took three months to manually record the gradiometer reading and exact position every two and one half feet throughout a fifty-foot by one hundred and forty-foot section of the grid.  While the survey results were remarkable for their sensitivity and accuracy, they were disappointing in that they indicated Maria contained little else other than the three anchors and other encrusted objects we had already seen.

The next step was to check the nearest anomalies northward (shoreward) of Maria.  On the morning of July 8, 2000, at an anomaly code-named Kramer, about one thousand feet NNW of Maria, the team pinpointed, excavated, and identified a roughly six foot-long eighteenth century anchor with a wooden stock.  It was noted that the anchor’s shaft pointed almost due east toward our next target, an anomaly code-named 007, which was about one thousand feet NNE of Maria.  That afternoon the 007 site was examined; Intersal’s Director of Operations and lead diver John Masters surfaced to report “there are four cannon and some ballast stone down there.”

From then until operations were suspended at the end of the year, Intersal concentrated on first studying the 007 site and then picking up what turned out to be a long trail to the NNE.  Six cannon and a few dozen ballast stone were located within fifty feet of each other at 007, with a seventh cannon found at Nathan, about one hundred and fifty feet NNE of 007.  By 2002, all seven cannon had been recovered and brought to the state laboratory facility at Fort Fisher.  After careful cleaning over the following months, none of the seven cannon were seen to be dated.  One of the cannon was put on public display in the main entrance hall of the North Carolina Maritime Museum in Beaufort.

Underwater archaeologists Wendy Welsh (L) and Chris Southerly (R) of the North Carolina Underwater Archaeology Branch prepare to install an anode on the North anchor of the Queen Anne's Revenge shipwreck.
Underwater archaeologists Wendy Welsh (L) and Chris Southerly (R) of the North Carolina Underwater Archaeology Branch prepare to install an anode on the North anchor of the Queen Anne’s Revenge shipwreck.

While none of the seven recovered cannon were marked with a date of manufacture, a major effort was made to narrow down the range of possible dates.  In February 2003, Intersal’s archaeological consultant took pictures, sketches, and dimensions of the 007/Nathan cannon collection to a meeting with the arms experts at the Royal Armories, Tower of London, in England.  One of the seven cannon, dubbed the “howitzer,” was of such a unique configuration (unusually short and fat, with identifying features around the touch hole) that the experts were able to state that its date of manufacture could have been no earlier than 1725.  That rules out Blackbeard’s Adventure (lost in 1718) as the source of the cannon, leaving El Salvador as the most logical candidate.

Between 2001 and 2005, Intersal concentrated on fine-tuning its magnetometer survey system and “re-magged” the prime target area in and around the Maria/007 Axis with greater intensity. Numerous anomalies were pin-pointed, then re-located and examined.

A trail of eighteenth century debris appears to start about a mile offshore in 22 feet of water at Maria, and then runs NNE along the Maria/007 axis, heading toward shore. Searching further along the trail, Intersal divers located five additional wooden stock anchors, a wooden and leather bilge pump piston with connecting rod, an iron cooking pot, and dozens of other smaller eighteenth century artifacts and encrusted objects.  By the end of 2004, Intersal vessels and divers had checked out more than ninety percent of the trail as they followed a veritable graveyard of thousands of eighteenth century artifacts towards the shore. In 2004, the team was working in less than ten feet of water, within three hundred feet of the beach.

2005- Present

As of 2005, more than eighty percent of the target area had been electronically surveyed.  The resultant magnetometer contour charts pinpointed more than seventy-five groups of anomalies, more than sixty of which have been identified by Intersal divers as being either nineteenth or twentieth century.

In early 2005 Intersal founder and president Philip Masters was diagnosed with Melanoma. Search operations were suspended, and Intersal concentrated on maintaining its El Salvador permit through continued work with the QAR Project. After more than two years of chemotherapy and other treatment, Philip Masters passed away in August of 2007.

In 2008 Intersal named David Reeder to be the new President and CEO of Intersal. John Masters is now Chairman of the Board and principal shareholder of Intersal.

In 2009 Intersal and Odyssey Marine Explorations conducted State-of-the-art Magnetometer and Side-scan survey operations at Beaufort Inlet. 

In 2010, Intersal continued the search for El Salvador, based upon its cumulative research and survey data; and began relocation and excavation of targets from the 2009 survey.

In 2013, Intersal filed an administrative complaint connected to DCR refusal to recognize renewal of the 1998 QAR agreement. As a result of mediation, Intersal and DCR signed a QAR Settlement Agreement which redefined the terms of the QAR Project partnership. In that settlement, DCR paid Intersal QAR Video designee Nautilus Productions $15,000 for unauthorized use of Nautilus images.

In 2015, Intersal began legal action against the NC Department of Natural and Cultural Resources (“DNCR”, formerly known as “DCR”) for Breach of the QAR Settlement. That action continues in NC Superior Business Court.

In 2016, Intersal QAR Video designee Nautilus Productions filed a action in Federal Court against DNCR for Copyright Infringement. In 2017, an order by the Federal Court allowed the Nautilus Copyright case to continue.