Technical Scuba Diving
Background The Ruby E was the second vessel intentionally sunk off of Mission Beach, San Diego as part of "wreck alley." She was built in 1934 and sank on June 18, 1989 so she has been down for a while. This post will give some history of the ship, pictures from a recent dive, and [...]
I have almost the entire photogrammetry model of the Yukon complete -- in fact, I had it almost complete after dive 5. However, I'm still facing the ongoing problem with the moving seaweed and not being able to align photos for the starboard side hull. Below is the "state of the project" after the "Seaweed [...]
Intro The "Butterfly Effect" is part of chaos theory in physics. The theory is that a small change in one state can result in large differences in a later state. The prototypical example is that a butterfly flapping its wings can result in a tornado. I ran into a "Butterfly Effect" between building the model [...]
This is my 200th post and I wanted it to be somewhat special so I am posting what I consider one of my best photogrammetry models of one of my favorite wrecks. Background Many might not understand why the USS Hogan is so appealing to dive -- after all, there is little left of the [...]
This is my 199th post. This post along with the 200th post will be about the USS Hogan. Background The USS Hogan is one of my favorite wrecks in the Southern California area. Many might not understand why this wreck is so appealing to dive -- after all, there is little left of the structure [...]
Summary I conducted Dive #4 for my Yukon photogrammetry project on Sunday, 6 November. The model is now close to 5,000 photos. I spent all week working on the model build process. I went down a lot of rabbit holes and my computers were working overtime. I'm definitely pushing the limits for the current hardware [...]
I had another dive on the Yukon and had planned on finishing the front of the wreck, starting the bow and starboard side and try to get some of the starboard edge done. The starboard edge is probably one of the two hardest tasks for this model. The reason is that currents often flow up [...]
Background This is a report on the results from the second dive in my project to build a photogrammetry model of the Yukon which is about 105 feet deep off Mission Bay, San Diego. The first dive resulted in about the back 30-40% of the stern completed. For this dive, I had planned to map [...]
As the saying goes, "when life gives you lemons, make lemonade." The Lemon As I wrote about in my previous post, the plan was to spend 4 days diving the amazing USS Oriskany aircraft carrier off the coast of Pensacola, Florida. I was going to be diving with Ben Lair and Justin Judd and we [...]
Background Tyler and I got a tip and GPS location from some friends at Scripps who are also involved with Project Recover. They said there was a wreck near Scripps Canyon that they found and they had a good side scan image. Side scan image from Scripps / Project Recover When I saw the side [...]