* 21May01 - Deployed PVC caisson and excavated sediment.

* 24Oct01 - At-dock testing of plywood trawl-resistant bottom mount (TRBM) mock-up.

* 20Nov01 - In-tank testing of plywood TRBM mock-up.

* 8Feb02 - Deployed steel TRBM at Smooth Ridge in two-ship operation.

* 9 thru 11Apr02 - Deployed Guralp seismometer #1016, then data logger/battery module, then current meter.

* 22Apr02 - Revisited MOBB site to relevel Guralp and download sample data.

* 27Jun02 - Swapped out data logger/battery module. These swaps continue every four months, and then every six months until MOBB is connected to MARS.

* 19 & 20May04 - Retrieved Guralp seismometer #1016 for repairs. Temporarily replaced with Keck Guralp #1046.

* 8 & 9Jul04 - Retrieved Guralp #1046 and reinstalled Guralp #1016.

* 26Feb09 - The extension cable between MOBB and the MARS node is installed and the MOBB system is connected to MARS.

* 5Apr09 - The cable is trawled, 39 days after installation, but continues to operate despite some damage.

* 25Sep09 - Both MBARI and UC Berkeley receive a funding supplement from NSF to replace the damaged cable ($68k to MBARI).

* 28Sep09 - An ROV dive at the MARS node reveals that the MOBB cable has been trawled a second time, occurring sometime in the previous few weeks. Again it continues to operate despite additional damage.

* 11Feb10 - An overcurrent fault on the extension cable finally shuts MOBB down, just two weeks short of one year of operation.

* 11Mar10 - The MARS-end SIIM is recovered by cutting the extension cable near the SIIM. Inspection of the over-stressed SIIM connector shows that it is probably not the cause of the system failure.

* 25Mar10 - A dive to recover the extension cable reveals that the MOBB site was trawled a third time on 11Feb10, severing the cable at the MOBB-end SIIM, damaging the electronics module, and destroying the current meter. All equipment was recovered except for the buried seismometer, the trawl-resistant bottom mount, and the bare extension cable as its end could not be found.

* 15 & 16Nov10 - The cable-trenching tool for the cable-burial toolsled is tested on Ventana. It was able to bury the cable 9 to 12 inches deep.

* 13Dec10 - The severed 3.6 km extension cable is recovered on a Ventana clean-up dive 3598. Of all the MOBB equipment, only the buried seismometer and the trawl-resistant bottom mount remain deployed.

* 23Jun11 - The extension cable is redeployed from the RV Western Flyer on Doc Ricketts dives 248 and 249. This time the cable is buried about 6 to 8 inches deep over at least 90% of its length. The MOBB system is reconnected to MARS and data collection resumes.

* 29Mar16 - Started to see ground-fault issues with both 375 V and 48 V feeds to MOBB.

* 16Jun16 - Inspected both ends of MOBB extension cable on Ventana dives 3944 and 3945. No damage evident. Moved MOBB from MARS port 5 to port 7 to see if ground fault followed, and it did.

* 3Aug16 - Power to MOBB is shut off due to an overcurrent trip.

* 14Jun17 - The electronics module and current meter are recovered from the MOBB site on Ventana dive 4039, and the ODI Nautilus connectors on the Guralp and the extension cable are capped with dummy plugs. Although the cable reel at the MARS site is brought to the surface by the ROV on dive 4040, the cable had to be cut and ~3200 m of cable remains on the ocean floor to be recovered later.

* 24Jul17 - A second attempt to recover the cable and MOBB SIIM is made on Ventana dive 4053, but after finding the cut end of the cable and bringing it to the surface, it slipped out of the manipulator's end effector and fell back to the sea bottom where it remains.

* 21Feb19 - After a total of 7 attempts, 6 of which failed due to weather and equipment problems, the remnants of the extension cable were finally recovered with a line-spool elevator. All that remains at the MOBB site are the buried Guralp seismometer and the empty steel trawl-resistant bottom mount.