Screen capture of bridge of submarine U166

Screen capture of deck gun of submarine U166

Fathometer record of a wreck showing 10 meters of relief and scour holes around wreck. It is rare that such a record is obtained. It is probable that this wreck was located by sidescan sonar and then passed over with the survey vessel operating its single-beam sounding instrument. Cove Point wreck.

Sidescan sonar record of ship on seafloor. The black is the reflection and the white area is shadow. The yellow line indicates where the least depth will probably be found on this wreck. Cove Point wreck.

3-D rendition of a sunken vessel obtained from processed multi-beam sounding information. This was the wreck of the ship BOW MARINER.

3-D rendition of a sunken vessel obtained from processed multi-beam sounding information. This was the wreck of the ship BOW MARINER.

Plan view of a sunken vessel obtained from processed multi-beam sounding information. This was the wreck of the ship BOW MARINER.

Port side view of sunken ship BOW MARINER obtained by NOAA Ship RUDE using 100-meter sidescan sonar range.

Sidescan sonar image of sunken vessel. Cargo hatches are apparent and possibly bowsprit. Large arcuate pattern would require divers inspection to determine cause.

A higher resolution sidescan sonar image of the same vessel as seen in image expl4054.

Sidescan sonar image of sunken schooner found in the Hudson River.

Multi-beam sonar image of sunken schooner found in the Hudson River.

Sidescan sonar image of the MONITOR. Note that the illuminated area is the reflection and dark is the shadow with this display system.

Digital terrain model of the MONITOR with 1/4 meter resolution. This image was derived from high-resolution multi-beam bathymetry. This is illustrative of the limitations of high-resolution vessel-mounted multi-beam sounding systems. The deeper the water for a given beam width, the lower the resolution as the beams spread out geometrically from the surface.

Submarine S5 sidescan sonar image.

Submarine S5 sidescan sonar image. This was obtained by knowing the orientation of the submarine and maneuvering the sidescan such that its track ran parallel to the vessel. Note that the illuminated area is the reflection and dark is the shadow with this display system.

A multi-beam sounding record of a sunken barge.

Wreck of vessel discovered on Stratford Shoal SW of Bridgeport. Sidescan image.

Wreck of vessel discovered on Stratford Shoal SW of Bridgeport. String of lobster pots to right of sidescan track.

3-D multibeam imagery of eastern Stratford Shoal.

3-D multibeam imagery of north Stratford Shoal showing pockmarks similar to those found in Belfast Bay, Maine.

Photo mosaic of sunken vessel.

Derelict fish trap as imaged by very high resolution multi-beam sonar

High-resolution sidescan image of pile of tires dumped to produce a Delaware Bay fish haven.

Tug with current scour marks around wreck. Large sand waves evident as well. Multi-beam image.

Wreck of steamer VOLUND found in "The Race", southeast of Valiant Rock. The VOLUND sank in 1908. Sidescan image.

Digital terrain model of TV MICHAEL. Depth and location not designated. Multi-beam image.

Possible sunken barge with downstream current scour hole. Multi-beam image.

TITANIC 2004 exploration team on the NOAA Ship RONALD H. BROWN

Partially buried anchor showing stock and arcuate fluke in lower half of image. Large sun star is hanging out next to stock.

Backside of hub of Kad'yak's ship's wheel as found in situ on the site. This is the center of the steering wheel and is usually inscribed with the ship's name.

Backside of hub of Kad'yak's ship's wheel as found in situ on the site. This is the center of the steering wheel and is usually inscribed with the ship's name.

A smaller anchor with folding rule photo-scale graduated in inches.

Dave McMahan, Alaska State Archaeologist, shooting video of large Kad'yak anchor.

A large anchor fluke from the Kad'yak with photo-scale graduated in inches

Steve Sellers, Diving Safety Officer of East Carolina University, holding measuring tape to map location of Kad'yak's hub prior to recovery for preservation.

Steve Sellers, Diving Safety Officer of East Carolina University, holding measuring tape to map location of Kad'yak's hub prior to recovery for preservation.

A gudgeon, a part of the rudder system of the Kad'yak laying on rock ledge.

An adjusted picture to highlight an anchor with stock and flukes from the wreck of the Kad'yak. Dive was made in February (brrrrr!) . Water temperature was 36 degrees F. Yowee!

Diving on the windlass of the Kad'yak. Dive was made in February (brrrrr!) . Water temperature was 36 degrees F. Yowee!

Tane Casserley entering water from the expedition vessel Big Valley.

Spare Phantom HD2 remotely operated vehicle.

Phantom HD2 remotely operated vehicle used on site for underwater photography.

Charter expedition vessel Big Valley anchored in Icon Bay.

Dave McMahan, Alaska State Archaeologist, surfacing from dive on Kad'yak.

Dr. Tim Runyan, Director of NOAA's Maritime Heritage Program, and Professor at East Carolina University.

Anchor chain from the Kad'yak concreted to rock ledge.

Anchor chain from the Kad'yak concreted to rock ledge. Kelp overlaying portion of the remnants of the chain.

State of Alaska monument indicating that the Kad'yak shipwreck is on record as a protected state historical site.

Hub of Kad'yak's ship's wheel as found in situ on the site but recovered for preservation.