Hello Robert - Good to hear from you,hope you are well. Dan
Forum: Technology and Operations

Only toys and models are cast in molds and thus identical. Ships and submarines are built by hand, using the materials and tools at hand, and with modifications on site. Modifications are often documented and sent forward for command approval, but then again - why ask if you know the answer is likely "No Way." Priorities were probably: *1* - Get the ship built and out on the b
Forum: Technology and Operations

Much like other discoveries, one needs to be careful about what one wishes for. The translation is that a large metallic mass was detected with a magnetometer, and a sidescan sonar provided measurements consistent with a submarine. The only tie to U 513 is the approximate location, but three boats are charted in the general area. Submarine = quizas U 513 = Quien sabe Dan Odenwell
Forum: General Discussions

As usual, the good news preceedes the proof. At least with my translation skills. The news story actually said was that a towed magnetometer identified a large mass of iron at that location, and side scan sonar yielded an image from which measurements of what could be of a submarine were taken. More Work is underway on further defining the target. It is the right place, the right size,
Forum: General Discussions

The answers provided are correct, at least as correct as they can be without more information. Metox was a radar signal receiver, so unless the destroyer was using the radar, Metox would have nothing to detect. The submarine sonar could have detected the Asdic active pings, had there been any. But diesel engines running at the surface would provide a good target sound source, so why ping
Forum: Technology and Operations

As one who beat this once before, please use the search function to see what you can find. I have copies of the sidescan images, sent to me by Ed Michaud at the time. PM if you want to discuss this any further, no need to revive the lack of good information again. Dan B. Odenweller
Forum: General Discussions

Use the search function, located on the top line of each forum, to search for temperature and humidity. Several long posts on this subject have been done in the past. Dan B. Odenweller
Forum: Technology and Operations

At .3048 meter per foot, 13000 feet is 3962.4 meters. That's about 4000 meters, so what's the problem? Dan Odenweller
Forum: Technology and Operations

Degaussing perhaps? Hello Robert M. Dan Odenweller
Forum: Technology and Operations

Two mechanisms are commonly used to allow objects submerged in water to resist the pressure of the water column pressing down on the object, these are: a-the elimination of voids or air spaces within the object, with a pressure equalization device, which eliminates differential pressures, making the depth infinite, and b-the construction of reinforced objects which can physically resist the
Forum: Technology and Operations

I believe there are two U.S. Fleet Boats sunk by the U.S. Navy off San Clemente Island (there is at least one), and the parts of several nukes are on the bottom near the Farallone Islands off San Francisco. Dan B. Odenweller
Forum: General Discussions

The boat is UB-88 and you can read about it at: www.UB88.org Dan
Forum: General Discussions

Sorry, but there is at least one German U-Boat sunk off the Los Angeles/ Long Beach Harbor. I believe it was a WWI boat, which had toured the U.S. coastal stations and wound up in Long Beach. Let me see what details I can find and post. Dan B. Odenweller ps. Hello Robert M., good to hear from you.
Forum: General Discussions

Feliz pascua y prospero año nuevo. Dan
Forum: General Discussions

Nope,that's the one I had in mind. Try a question and see what ensues. Dan
Forum: Warship forum

Jim McDaniel had a website for US Fleet Submarines, he lurks here as well. Dan
Forum: Warship forum

What, they forgot to post the KTB before sinking? I suppose they also forgot to send in the GPS location for the treasure hunters. :>) Dan Odenweller
Forum: WWI forum

Ken - Well, it will have been five years in January, since Walt told us that they would next be back on their site in July or August. We last heard from him on 01/15/2006. Can we lay this one to rest, or have you beaten me to it? I've not seen a documentary, nor heard of a large horde of gold having been found. May you have a peaceful holiday season, Dan B. Odenweller
Forum: General Discussions

The attacking escort was limited early on by the noise generated by the escort, and the water forces on the transducer. Higher speed produced turbulence from hull, cavitation bubbles, and mechanical noise. Water forces on the dipped transducer led to hull mounted arrays, like the chin mount on the bow, which then made noise on the surface of the transducer (hull), or trailing wire transduce
Forum: General Discussions

Bioluminescence is a fact of life for submarines, and for divers in the water at night. Night diving in the right conditions is beautiful, and eliminates the need for a light source. I always brought with me a pair of US Divers Rocket fins, or Scubapro Jet fins, to use at night because the fins generated vortices of bioluminescence from each port in the fin. A submarine will also generate
Forum: WWI forum

The answer may lie in the precise language used, thus: - the u-boat had a design life was four years is not the same as - the average life of a front line u-boat was four years. In any case, I am unaware of a precise design life value for u-boats built before the war broke out,vs. the early war years, and say late war years. Did it change, and did they recognize the change officially
Forum: Technology and Operations

Welcome to the Forum. Operational life of a vessel depends on the design, the use it is put to, the care it receives, and how it is treated both in use and in storage. Engineering design includes a desired life expectancy, based on specific uses, maintenance and attention. So for example: - A landing craft might be designed to make one trip to the beach under combat conditions. The act
Forum: Technology and Operations

I served on YFU54, and on LCU1498 in 1966. Spent 1966 and 1967 at NSA Danang. Got to visit Chu Lai, Hue, and Dong Ha on a regular basis. Dan
Forum: Warship forum

Suggest reading the career of U262, use the tab "The Boats" above, and go to U262. She survived the Prince Edward Island incident, and returned to base. Dan Odenweller
Forum: General Discussions

Jake - The submarine distress buoy(s), is a buoyant marker attached to a cable, which can be released by the submarine in distress. The utility of the device is limited by the length of cable attached, and the depth of the submarine, and of course someone has to be looking for the signal. In wartime, most navies de-activated the device, to avoid accidental releases. In WWII, the devic
Forum: Technology and Operations

Try searching this forum using the search word Jeremie. It is not a U-Boat, it is a steam powered patrol craft. The "conning tower" is the steamm engine. The site has been well researched, so enjoy. Dan Odenweller
Forum: General Discussions

Try visiting the "The Boats" forum on this site (tab at the top of the page), then choose Boat Operations, then go to Operation Paukenschlag (Operation Drumbeat). There is also a book on the subject, "Operation Drumbeat" by Michael Gannon (ISBN 0-06-092088-2) paperback. Dan
Forum: General Discussions

Try the search feature, using Murphy's Law as key words. We discussed this item just a couple of months ago. The submarine was a Venezuelan navy boat, originally a USN boat. Dan B. Odenweller
Forum: Movies and Films

Ken, My point was, and a search using "survivors," just executed (and all dates, all forums), provided over 1600 hits - the subject has been exhaustively covered. Dan B. Odenweller
Forum: General Discussions

The subject has been repeatedly exhausted on this site. Please try searching for the previous discussions and see if they answer your questions. Dan B. Odenweller
Forum: General Discussions