Miscellaneous


LOST AT SEA:
A treatise on the management and ownership
of shipwrecks and shipwreck artifacts

by Michael C. Barnette

shipwreck Lillian

Somewhere out on the ocean, a ship is in distress. Tossed about by churning seas and brutal winds, the vessel struggles to stay afloat. Her crew puts forth a valiant effort while passengers, many incapacitated by waves of nausea spawned by the ever-moving deck underneath their feet, huddle together in fear. The hull is slowly breached, and seawater steadily invades the ship. As the blitzkrieg of flooding water rises to extinguish the boiler fires, the vessel loses all power. Cast in darkness and overwhelmed by the noise of the howling wind and crashing surf, the sea tears off sections of the crippled ship, carrying away numerous unfortunate souls. The end is near.


Finding a Shipwreck

by Capt. Steve Nagiewicz

SS Mohawk aground

Of course, finding a shipwreck is a necessary prerequisite for finding artifacts. Many wreck locations are well known. Others are secrets, and many wrecks have yet to be discovered. While you can recover artifacts from almost any shipwreck, it is these "virgin" wrecks that are often the best producers of prize items like portholes, deadeyes, and china. But how do you find a wreck like this? Research is the most productive method. This will require visiting local libraries, historical societies, nautical museums, and many other institutions. It means lots of reading and digging for information. Be prepared to spend some time searching for clues that aren't willing to be found.


Artifacts recovered after long immersion in salt or freshwater require conservation treatment if they are to last. On exposure to high concentrations of oxygen in the air, iron artifacts will bloom into piles of rust. Wood will crack and split if dried out improperly. Organic materials will crumble to dust.

The manual below details conservation methods for many types of materials and artifacts.


I find this sort of material to be much more interesting than the endless rehashing of coral reefs, glowingly useless gear reviews, and "buoyancy tips" that fill up the standard glossy diving magazines.

Historical

Conservation Manual – Donny L. Hamilton

The Oxford Companion to Ships and the Sea

The Oxford Companion to Ships and the Sea
Peter Kemp, 1988

Lots of interesting information and trivia.





wire drag
A fine diagram of a wire-drag operation. The wire is towed between two tugboats, suspended by buoys at a predisposed depth. When the cable snags on an obstruction and draws into a V, the buoys point to its location.

Wire dragging is an operation used to locate and/or reduce the navigational hazard of a sunken wreck, rock, or other obstruction.


Side-scan sonar is a modern method of underwater imaging that can produce remarkably detailed and realistic views of shipwrecks and other bottom features using sound rather than light.

side-scan sonar shipwreck SS Delaware
Notice all the detail in this side-scan sonar image of the Delaware.

12-Scaled Worm

Lepidodontus spp.

Size: to 2"

12-scale worms are usually found while separating and cleaning mussels. They seem to be harmless and inoffensive. In the illustration, the head is at the left. There are many varieties, some with more or less scales.