The Shark River reef is tucked into a corner between the Mud Hole and the Barnegat shipping lane, which happens to be in close proximity to the wreck of the Stolt Dagali. It has a minimum depth for navigational purposes of 50 ft ( 8 fathoms ) at mean low water. Shark River is the deepest of all New Jersey reef sites, with an average bottom depth of 125 ft, although scour holes around larger vessels may be much deeper.
I have omitted the Redbirds from the chart, as they are no longer there. There were two clusters in the mud at the southern end of the reef, and one cluster atop the rock ridge at the northern end. Those are the cars in the pictures below.
Side-scan sonar animation courtesy of Army Corps of Engineers
This reef got off to a big start, with three tankers sunk in one day - the Coney Island first, and then the "twins" Sam Berman and Alan Martin. The Shark River Reef is often referred to as "The Parking Lot" by charter boat operators. In addition to the vessels shown, the Shark River Reef also contains a great deal of rock and rubble.
Side-scan sonar mosaic of the Shark River Reef, showing the partially-built rock ridges along the top, the Coney Island at lower right, and the massive Algol at the center, along with various other wrecks and concrete drops. The Captain Bart is visible just below the rock ridges, the APL-31 is NNW of the Algol, and the Alan Martin / Sam Berman duo is NW of the Coney Island. The tiny HRFA is just a speck among the concrete mounds, and the Mako Mania is visible south of the Algol.
All manner of concrete, steel, and stone rubble from dredging, demolition projects, and other construction is used as artificial reef materials. This material is generally available at very low cost or free from construction companies who are more than happy to get rid of it. Transportation costs determine where this material is used by the Reef Program.
This site on the Shark River Artificial Reef consists of two long ridges of seven huge rock piles each, with one long valley east-west between them. Between piles, there are smaller valleys. Each ridge contains approximately two million tons ( or one million cubic yards ) of granite, blasted and dredged from the bottom of New York harbor between September 2002 and September 2003. Peak depths range from 85 to 105 ft, bottom depth is 130 ft. In addition, 15 Redbird subway cars were deposited on or near one of the piles. A single similar rockpile is located in shallower water on the Axel Carlson Reef.
"This picture was taken several years ago by my wife, Debbie. We were searching for the Adriatic's lost clam dredge that day. Later, after the sinking, my group of divers was the first to dive on and identify her. I used this picture at the dive site to set the dive plan and objectives."