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MasterLine booster has been sold.

MasterLine Oxygen Booster is for sale for $7000. The booster is located in Olympia, Washington and is in New Condition with only 28 hours (total) of run time. The Service Manual and seal replacement tool is included. This Model 7000 A-2 electric oxygen booster requires 125 Volt, 15 amp power...

Hi Peter, I was told those bones had been identified as coming from a Giant Sloth (pre-historic), but I could be wrong. The only Mastodon Bones I remember were in Tux Kapaxa and Hola Negra, but I'm sure there are more. We've seen quite a few Camel Bones (the Pitt and Regina) as well as Mayan...

A couple of years ago we had a bad batch of EPDM O-rings that were sold to us as 90 durometer tank neck o-rings. We had a large number of failures (primarily extrusions of size 214 and 116). We tested the o-rings and found them to be very soft (less than 70), so have switched back to Viton...

Hi Dave, Welcome to ScubaBoard. I remember getting the same one line email from you many months before we even published our book. You could not have read the book then and I'm guessing you still have not? That's too bad as it really is full of original material and was not copied. As Lynne...

Local Wreck divers Laura James and Scott Boyd have located the wreck of the Mosquito Fleet Steamer Dix in Seattle's Elliott Bay. The Dix was the worst maritime casualty in the history of Seattle and Puget Sound, sinking in 1906 with the loss of thirty-nine lives. On November 18, 1906, the...

Hi Dennis, Unfortunately, the best photo opportunities usually come from dive sites with a lot of current. They get the big critters. My favorite sites for photography are not cheap or really good for beginning photographers (i.e. Mexico Caves/Cenotes, the Galapagos, etc.). However...

Hi Dennis, I have been to La Paz, and it's not my favorite place to dive. I can think of many other locations that are better for underwater photography. However, a lot of people like it and return year after year, so it may work for you. We did not use Club Cantamar during our trip, but did...

I find the opposite to be true (as far as strobe power is concerned). I use a pair of 160 Watt/s strobes on the camera, but put the most powerful strobes that I own as remote strobes on my models ( 300 Watt/s). As Doc Harry suggests above, shoot in manual mode so that you can put the f/stop of...

Wednesday, in between the snow blizzards and ice storms, I had an amazing opportunity to go out and dive the wreck of the Al-Ind-Esk-A-Sea from a submarine. Having done this 240' dive a few times on open circuit, it was quite nice to be warm, cozy and dry for a 3 hour dive. Better yet, there...

Yes you do! :D Scooters and Deathstar-like cameras just don't work very well together. Like Richard, I don't use travel mix unless I'm getting down in the 300' range and then we just use our deep deco mix. It has been handy a few times when we've had to stop just below the surface and...

Is your garage attached to your house? I insulated my attached garage and it rarely actually gets below 32° due to the heat radiating from the house into the garage. The fastest way to warm up the garage is actually to turn on the compressor. :D It puts out a lot of heat. I do have a...

Hi Bell, There are two wreck symbols in the area you refer to (although your position information looked off). Both have the dreaded "PA" next to them, which means "Position Approximate". That means they are wrecks that were historically reported to have sunk in that area, but have no...

I usually get my Lawrence Factor filters from NuVair. Nitrox & Compressor Accessories - Filters

It's a river anchor, very commonly used in the Pacific Northwest by the Jet Sleds that fish the rivers (like the Columbia). I think the actual name of that style of anchor is a "Rocker Anchor".

Hi Murphy, On our Inspected 41' Aluminum Cat, the builder's Naval Architect did the stability calculations and inclining test for the Certificate of Inspection. Have you contacted the manufacturer? They should be able to provide the information that the USCG wants.

I spoke with the Lowrance/Navico reps at the Seattle Boat show last week, and the Lowrance Side Scan is rated for 200' of depth. I haven't actually seen one operating at that depth yet. Like Wil, I also have a Huminbird unit that is transom mounted. I have been able to see larger objects as...

I've found the conversion error when converting from Loran to GPS to be very consistent and predictable. While researching and locating wrecks for my book, a lot of the information that I was given was in the form of Loran numbers. When converted to GPS, like James, the wrecks were no...

I guess it does depend on which Cavern you are talking about and what your definition of a "short distance" is, so Peter is probably more correct. However, even in Peter's photo above (Grand Cenote), there is open water just to the left of the picture that is actually much closer than the...

In most areas of the Cavern Zone, there is a hard ceiling overhead. The Cenote opening is generally only a short distance away (always visible and an easy swim). The visibility is outstanding and there is quite a bit of natural light, but you'll enjoy the dive a lot more with a light. The...