Dive Sites (12/46)

Dive Sites - pick your starting point

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Delaware Bay Artificial Reef

1.13 sq miles
Depth: 22-27 ft [download]


Delaware Artificial Reefs

Delaware has a string of artificial reef sites in the Delaware bay, but they are of little interest to divers. Most of the sites are quite shallow and perilously close to the shipping lanes, several of them were actually reduced for this reason. The conditions in the bay are hardly good for diving. The reefs consist mostly of concrete rubble from construction in Philadelphia and other cities on the river. Also shown is New Jersey's sole artificial reef in the bay.



DelJerseyLand Inshore Artificial Reef

26 Nautical Miles from Indian River Inlet, 1.51 sq miles
Depth: 120-140 ft [download]


Dive Sites - pick your starting point



Shipwreck Dorothy B. Barrett
Type:
shipwreck, schooner, USA
Built:
1904, Deering & Donnell, Bath ME USA
Specs:
( 259 x 45 ft ) 2088 gross tons, 10 crew
Sunk:
Wednesday August 14, 1918
shelled by U-117 - no casualties
Depth:
60 ft

low debris field mostly buried in the sand


Type:
shipwreck, trawler
Depth:
60 ft

upright, intact


Shipwreck Drumelzier
Type:
shipwreck, freighter, England
Built:
1895, England
Specs:
( 340 x 45 ft ) 3625 gross tons, 30 crew
Sunk:
Monday December 25, 1904
ran aground in snow storm, incompetence - no casualties
Depth:
20 ft

Type:
shipwreck, dry-dock barge
Depth:
110 ft

This anonymous big rectangular wooden dry-dock barge lies off Asbury Park, out near the edge of the Mud Hole. It is similar to the better-known Immaculata. The hulk of the wreck rises up as much as 10 feet, partially intact, while the upper sides have collapsed into the silty sand. Holes in the main wreckage allow penetration into the dark interior, which is surprisingly barren. A debris field of large rectangular ballast stones, wooden ribs, and rusted machinery extend from the western edge of the wreck, and to a lesser extent all around it. In exceptional late October fifty-foot visibility the view of this wreck from above was impressive, but overall this is not a very pretty site, and it is seldom dived. Good for lobsters, Sea Bass, scallops, and decompression.



An Explanation of Professor A.A. Buhlmann's ZH-L16 Algorithm

by Paul Chapman

Note to new divers and potential new divers:

This information is presented for general interest. Don't be scared off by what you see here - you don't need to learn any of this to become a safe and competent scuba diver. You will however need to understand dive planning.

The following is a summary of the decompression algorithm described by Dr A.A. Buhlmann in the fourth edition of his book Tauchmedizin ( diving medicine ) published in 1995 ( only in German. ) the book contains a considerable amount of other information and is published by Springer-Verlag ISBN 3-540-58970-8. Rumor has it that at the time of writing ( November 1999 ) an English translation is being prepared for publishing, so hopefully, in due course, this document will become redundant.

The algorithm is simply a "recipe" for modeling the behavior of inert gases, which diffuse in and out of our body tissues when breathed under varying pressures. The intention is that if the recipe models the actual processes in our bodies accurately enough, it can be used to plan dives ( and other pressure exposures ) with a view to avoiding decompression sickness.