Visit of archaeological divers from abroad

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From March 5, 2009 till March 19, 2009 two archaeological divers from the States and a group of archaeological divers (Mergor in Mosam) from the Netherlands were visiting Curaçao to work on the Mediator wreck. One of the two people from the States is the professional archaeologist under whose direction all archaeological activities on this wreck take place. He wrote an initial plan of the activities that could be undertaken during this period. That plan had to be adapted because it was not possible to dive on all days because of visiting cruise ships in the harbor.

A quote from his plan:
Testing is proposed in the stern portion of the vessel.  The stern has not been identified beneath what appears to be a massive amount of overburden that covers the after part of the wreck.  Evidence from past work at the site suggests that the hull of the vessel is twisted significantly.  Substantial differences have been recorded in the angle of the decking at the bow and amidships.  While most of the port side of the vessel is covered by silt and debris, several large sections that appear to be from the port side of the Mediator’s hull hang over the wreck implying that this part of the wreck is either crushed or lying on its side.

By locating the stern of the vessel, we may establish whether the after part of the wreck is intact and the degree to which the hull is actually twisted.  This information would be critical to determining the stability of the hull should additional removal of debris be planned aft of the engine room.  That is, if the hull is twisted and crushed, either from impact on what would have been the hard bottom of the harbor in the late 19th century or from the persistent addition of overburden from the slope leading to the quay wall, the hull may be unstable to the point that removing overburden could cause further damage and be unsafe for divers.  The work currently proposed in the stern area would be conducted either with an airlift, a dredge, a mechanical probe, or a combination of these techniques.

So it was decided to dig a number of test pits with the airlift in the stern portion of the wreck. I took pictures of the area before and after the activities in this area. Unfortunately none of the test pits revealed a part of the ship.

The before picture:
Panorama_before_20090307_gray
The numbers indicate the areas where the pits are made. Because it was not completely clear before where that would be I missed the area of the first pit. The dark line at the right side of the picture is the perpendicular baseline at the stern of the ship.

About the same area after the work was done:
Panorama_after_20090322
The black line indicates the same baseline as in the previous picture. The numbers indicate the location of the three pits. Two of these are within the area that is consider to be inside the ship wreck and the third pit is behind the visible end of the ship wreck. Al three pits were made 1 meter deep but no decking was found at that depth, so the result is unconclusive.

The same area but now seen horizontally from the point where the baseline that is running over the middle of the ship crosses the perpendicular baseline at the stern of the ship is shown here:
Panorama_from_end_baseline
The black line is superimposed on the perpendicular baseline and the figures 1, 2 and 3 indicate the location of the three pits.