Locating & Salvaging the shipwreck Jason
&
Information about similar operations

 

Locating and Salvaging the shipwreck "JASON"

 


One of many articles as presented in a
Dutch magazine named Panorama

 

 
ROV recording of the wreck at 443 feet (135 mtr) deep

 

Click on the photo's to enlarge them

The operation:

1997

On the night of May 18, 1994 the 89-foot (27-meter) wooden sailing yacht JASON collided with a Turkish freighter about 4.5 miles from the coast of the island of Patmos in the Mediterranean Sea in the south of Greece. On board were a 29-year-old Dutch girl named Emmy Nijssen with her fiancé Stefanos Letsos (a survivor) and a Greek boy named Atanasios Valvanis. Both Emmy and Atanasios where sleeping on the lower deck, and disappeared with the ship beneath the waves to a depth of 443 feet (135 meters)

From that moment, they became officially missing and no one knew where the wreck lay exactly, or whether the stories surrounding the circumstances of the accident were accurate or true. The Dutch and Greek parents of the victims searched for assistance for  3 years. Eventually, in January 1997, they approached Metaldec International and asked them to locate the shipwreck and its two victims, with the goal of bringing the mortal remains home in order to give them a proper burial.

For this reason, in May 1997, the first specialized team from Metaldec traveled to Patmos with a large amount of equipment, among which were side-scan sonar (type KLEIN 595), magnetometer, ROV (Remoted Operated Vehicle), diving equipment, drop cameras, etc.

On arrival and mobilization in Greece, the second team from Metaldec was flown in, together with employees of the television production company Cameo Media, the producers of the Dutch TV program called "Heart of the Netherlands" (SBS-6) who joined us to make a documentary of the whole project. The Metaldec team immediately started with a survey for the wreck using the side-scan sonar, and after almost 4 days the wreck was located. It stood on its keel, fully intact, with the masts in an upright position, as shown in the sonar picture on this page. When the necessary video recordings of the wreck where taken, preparations where made for a continuation of the salvage. Then all team members left to the Netherlands.

1998

In August 1998, team members from Metaldec set off again for Patmos, with the necessary documents and equipment,  with the task of recovering the bodies of the drowning victims, Emmy Nijssen and Atanasios Valvanis.

Initially, there was an appeal for divers from England and America who where specialized in diving with "closed circuit rebreathing system" equipment, usable up to a depth of 1150 feet (350 meters) with a maximum dive time of 8 hours. They would enter the wreck at a depth of 443 feet (135 meters) to recover the bodies. For several reasons this concept became impossible, so the decision was to lift the whole shipwreck to the surface by using a sheerlegs with a huge 36-foot (11-meter) wide grab. Unfortunately, the sheerlegs was stuck in another country and could not arrive in time.

The search for an alternative solution started and after thorough consultation with some large salvage companies in the Netherlands, it was decided to drag the wreck over the very smooth sea floor, which steadily rose up to a shallow bay on Patmos, and lay it down at a depth of 65 feet (20 meters), well in range for divers with standard professional diving equipment to enter the wreck.

It has to be said that dragging a wreck over the sea floor is very uncommon if not impossible; however in this special case, considering the low budget and no alternative, it was an option with a chance of success. The sea floor that the wreck was going to follow on its course to the bay needed thorough investigation in advance, in order to avoid or remove obstacles, so a side-scan sonar inspection was carried out over the whole area to assess the conditions on the sea floor. The conclusion was that the idea of dragging the wreck could be carried out.

More video recordings of the Jason shipwreck were taken,  and a large towing vessel was rented for 24 hours. At 8.00 in the morning, at the end of September 1998, a net was stretched around the wreck. The net measured 660 feet wide and 0.54 nautical miles (1 km) long. The steel cables on both sides were 2.36 inches (60 mm) thick and could withstand a weight of about 480 tons.

When the net closed around the wreck, the pulling and partial lifting started. The underwater weight of the ship was calculated by several salvage companies at about 10 tons, so this should not be a problem for the towing vessel or salvage operation. After hours of pulling and lifting, the wreck was still unable to be moved. The adhesive strength of the sand around the hull and the weight of the sand in the wreck were so huge that the steel cables spontaneously snapped. Again and again the steel net and cables were repaired, only to snap with the next attempt.

What is more, in the evening and night an unexpected storm came up and lasted for many days, so the salvage operation had to be canceled. On top of that, the Greek authorities ceased their collaboration, so that a new attempt became impossible. Everything proved to be in vain, and the aim of returning the mortal remains of the two children Emmy Nijssen and Atanasios Valvanis to their parents in order to give them a decent burial had to be abandoned. The parents had no grave where they could release their feelings and mourn.

Nevertheless, the case of the two missing children had been solved. The wreck had been localized up to 10 feet (3 meters) of accuracy, and the report of the collision appeared to be precise. The families of the deceased children could begin their healing process.  At least they felt strongly supported by all the efforts and gained some comfort from the clear video pictures of their children's grave on the sea floor, every day illuminated by sunlight (very uncommon) and surrounded by numerous fish and playing dolphins, the place where their loved ones now rest forever. Our thoughts are always with them.

With special thanks to Captain Manolis Grillis from Patmos, Smit International, Wijsmuller, Scaldis, Steam Machines Inc., Stuart Clough, Interpol, Rijkswaterstaat, Dutch Ministry of Defense, NeSA, NISA, Osiris, Sympa Rent, Sub Ocean Services, Electra, Conrad, KPN, City Hoorn, Bart Valstar, Rob Lambij, Ellen Stuifbergen, Han Schiet, Peter de Vries, Jan & Joke 't Hart, Annie Jansen, Ruud Noordegraaf, Jan Groeneveld, Renata v.d. Harst, Dominique Poliezou, Detective Peerdeman and all others that supported in the project called "EMMY NIJSSEN".

Sonar record at 443 feet
or 135 mtr. depth


The 89 foot or 27 mtr. wooden
sailing yacht named JASON still intact


ROV (Remoted Operated Vehicle)

Click on the photo's to enlarge them