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3D photogrammetry

​One of the objectives of the 2013 shipwreck Mars Exepedition was photogrammetry 3D images.  Florian Huber from Kiel University did some expirimental work for the project.  He used a specialy calibrated DSLR camera and the images where processed in to a 3D model with an accuracy of 0.5mm.  The below image is a screen dump from the 3D virewer. The resilt was so sucessufull that we plan to do more photogrammetry in 2014, possibly covering the entire wrecksite.  

 

 

Underwater Panorama

Underwater 360 panorama of the shipwreck Bremsund. This is just an early test of concept. The plan is to make a virtual tour of the shipwreck Mars in the future where the viewer can click on different areas of the wreck and explore 360 panoramas.

Mars museum exhibition

Mars museum exhibition promotion video. The premiere is on saturday the 31st of August. More than 300 square meters of exhibition area and a new film with never before seen uw material.

Mars Makalös - Det Marina 1500 talet from Ingemar lundgren on Vimeo.

Illuminating Mars

Erik Börjeson www.ericborjeson.com is building a light rig for this summers Mars project. The small scale prototype is tested and working and he is now going full scale. The total output from the LED lights will be 4500W. That is about the same as 20 Halcyon 200W HMI lights! This will be unreal. The light output will be 400.000 lumen! The goal is to illuminate 400 square meters to be able to reach F5,6 at ISO 800. There is virtually no ambient light on the Mars wreck so this artificial sun will be awesome for the filming and for still photography. It will be powered by a 6000w top side generator. A four point mooring will be set up to hold a ship with generator above the site. The amazing images on the Ghost ship used a light rig producing 100.000 lumen, this will have 4 times that output.

http://www.ericborjeson.com/

USS Atlanta movie awarded

The Elena Konstantinou movie The return to USS Atlanta defender of Guadalcanal claimed the prestigious Spirit of  Independence Award at the film festival in Fortlauderdale FL USA. Ocean Discovery is proud to have been part of the making of this fantastic production.

 

Diver of the conference award 2012

 

Today Richard Lundgren was awarded diver of the conference award at Eurotek for his long search for the shipwreck Mars.    

 

Filming the Mars

The TV documentary Tall Ships at war  is under production.  Filming started this summer both on land and underwater.  Using the very best video technology available. A custom built housing designed by Erik Börjeson for the Red Epic 5K promises ultra-high resolution and image quality.  There is no ambient light at 70m so the biggest challenge is to light the scene.  The team at times had up to 6 off camera 200 Watt HMI lights in the water simultaneously to light the wreck site.  

In 2013 the underwater video production will continue with an even more ambitious plan. We hope to deploy a 5000 Watt ship-tethered HMI light to put an artificial sun just above the wreck.  This should be equivalent to about 20.000 Watt halogen light output. 

Richard Lundgren and Carl Douglas preparing the Ocean Eye custom built housing for the Red Epic 5K camera. Photo Ingemar Lundgren

GUE´s Jarrod Jablonsky lighting the scene for videographer Richard Lundgren. Photo Ingemar Lundgren

The cannons of the Mars

According to the latest research from Ingvar Sjöblom the leading historian on 16th century maritime history, the  Mars carried significantly more then 107 cannons.

Ingvar beliefs he has proof of the he exact number of cannons.  All but 4 where made of bronze.  The enemy side , the Danes and the Lübeck navies mostly had iron cannons of inferior quality.  Sweden which had abundant resources of copper had the luxury of equipping their more prestigious ships with the superior but very expensive bronze cannons. They could be loaded with more gun powder then the inferior iron cannons. More range and more penetrating power was the result.  This was a transition period of naval warfare. Mars was probably the first warship to sink an enemy vessel in direct cannon battle, the Lübeck ship Långe Barken. 

In this picture a diver is examining one of the many cannons of the Mars.  

Photo Ingemar Lundgren / Ocean Discovery

The dolphin "handle" of the cannon in close up.

A massive hull side

Mars port side is almost completely intact.  The hull side is massive with enormous oak timber and numerous gun ports.  In this picture the viewer can get an idea of the size.  There is no ambient light but the water is clear and as seen here using a slave strobe really helps lighting the scene.  Diving the Mars is an almost out of this world feeling with diving lights penetrating the green water creating a green eerie gloom.

Photographed by Tomasz Stachura/ Ocean Discovery.  

Rescue drills

Before diving operations started helicopter rescue drills where carried out.  The Visby search and rescue helicopter have been on standby during all diving operations.  Within 20min the helicopter is on site. The Mars is located in a remote area and the nearest chamber is several hours away by land.  So having access to a helicopter has been an important safety measure. 

Here the helicopter is lifting a doll from the deck of the Askholmen. Photo Ingemar Lundgren/Ocean Discovery 

 

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