9 observations in 8 expeditions
Expeditions Contributed to
Check out this overview of the modifications we made from a stock OpenROV v2.8 in order to allow us to operate at depth of 150m to document the S.S. Tahoe wreck in Lake Tahoe!
We're preparing for our first live dive on the S.S. Tahoe! To receive a notification when when the stream goes up, be sure to subscribe to our Twitch page: twitch.tv/openrov
In preparation for our expedition next week, a small team from OpenROV coordinated a trial run in Tahoe to test equipment. We've outfitted a small inflatable boat with long range communication equipment, a USBL acoustic positioning system, and a low cost dynamic positioning system. Our purpose for building this system was to demonstrate that many of the capabilities one might think would require a large research vessel can actually be achieved with off-the-shelf parts that are more portable and much less expensive. You can read up on the details on the forums here: http://bit.ly/25xwKBn
Well, we had quite a day yesterday! After packing our gear and heading north up the bay, it quickly became clear that deploying our ROVs was going to be a challenge. We were able to get fairly close to the wreck site, but the water was so choppy that we were forced to audible and find a calmer place to set up and fly our robots (Clipper Cove - to be exact). Visibility and current in the bay can be tricky, but we think an early morning trip when the water is calmer might make it easier to investigate our initial target site. On the plus side, our ROVs worked really well in Clipper Cove!
Tomorrow we will set off around midday to explore the base of San Pablo Bay. We plan on testing one our team members' newly built OpenROVs in open water for the first time. More updates to come!
Meta data: Sunrise - 6:22 AM Sunset - 7:52 PM Wind - 7 mph Temp - 54 degrees F We are on the move again! It's a sunny, blustery day in San Francisco and we're prepping to send Puck back into the bay. Things we are thinking about: -Current: Last time, we had some difficulty with this. We are expecting the water to flow at around 1 or 2 knots. Our hope is that the addition of a new prop/ability to operate at a higher thrust factor will help counter it this time. -The pipe: We're curious about the background of the terra cotta pipe we found. With a little more investigating, we want to be able to identify the time period it came from and what system it belonged to. -Structures surrounding the water: We drove into the Dogpatch from a different direction this time, and were amazed by all of the abandoned warehouses! If we have time, we may try and pop the ROV into the water at the foot of these buildings. The only concern with this is entanglement, as we would have lots of old pilings and debris to contend with. More updates to come!
After reading about the history of the creek, we were initially surprised to see people braving the water without hesitation, but the more we spoke with our new friends the more we realized we had stumbled upon an invaluable source of information. They were able to point us in the direction of the old cannery location, give us some more background on the butchery, and corroborate some of the gritty details we had learned (even filling us in on some that we weren't aware of). Check out this development map of the Islais Creek area during the 1920's!
Last weekend got us really excited about the things we could find along the edge of San Francisco Bay. One of the highlights came from an encounter with some local kayakers. The timing couldn't have been better. Just as we were booting Puck up and running some preliminary tests, they slid up along the creek bank. With their guidance, we've got some ideas brewing for our next deployment.