Miscellaneous
Another entry from the Way-back machine:
"Gentleman George"
by Dan Berg
Note: George Hoffman passed away January 14, 1997, about a year after this article was written. His death is a great loss to the diving community and he will be missed by us all.
More: Captain George Hoffman ...
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.
More: Side-scan Sonar ...
Alpha-Numeric Signal Flags
In this modern age of radio, these signal flags are a quaint anachronism that is no longer used, although they were once very important in ship-to-shore and ship-to-ship communications. Each flag stands for both a letter value and a shorthand message. The letters are expressed here in the modern international phonetic alphabet, in which A-B-C would be spoken Alpha-Bravo-Charlie (see below).
More: Nautical Signal Flags ...
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.
More: Conservation of Artifacts ...
Port & Starboard
port - the left side of a ship, when facing forward
starboard - the right side of a ship, when facing forward
The starboard side of a vessel ( or an airplane ) carries a green running light, and the port side carries a red running light. The best way to remember all this is: port, left and red are all short words, while starboard, right, and green are all long(er) words.
More: Glossary of Terms ...
New Jersey scuba divers provide evidence of the identity of a popular New Jersey dive site
More: Identifying The Emerald ...
