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Entries in Puget Sound Divers (3)

Thursday
Jun042009

YMS Minesweeper Deck Plans

Located in Lake Washington are three YMS minesweepers.  Two of these vessels are very much intact.  Our team has been using the below deck plans to explore these three vessels over the last several years.  These deck plans are for YMS series 135-409.

Please note that these plans should be used only for general reference.  The vessels in Lake Washington have been modified following their military use and do not fully match the structural diagrams.  Additionally, the two groups conducting penetration dives on the newest minesweeper both experienced partial structural collapse.  The latest collapse was quite serious and could easily have been life threatening.   Both dives required a zero visibility exit from the vessel.

Penetration dives on the Lake Washington Minesweepers should not be undertaken.

The below files are high resolution PDF files:

Outboard Profile

Inboard Profile & Deck Plans

Main Deck, Forecastle, Chart House & Pilot House

Saturday
Apr252009

PV2 Harpoon - Lake Washington


PV2 Harpoon in Lake Washington - Another visit from Ben Griner on Vimeo.

We dive regularly on the planes in Lake Washington and this dive we ran more video to document the planes condition and any changes we see from year to year. This plane nosed directly into the mud and is stuck there vertically. The tail section is lying next to it in the muck with the bottom at approximately 145' fresh water.
Saturday
Apr252009

Sidescan Imagery of Scorpion Site

The below images are of the site currently referred to as Scorpion due to is uncanny resemblance to a Scorpion.  This site is listed by NOAA as a plane but appears to be natural formation.  Two historically significant planes are within one mile of this site.  Images were taken with equipment from Scott Christopher and Sound Aquatics.  Resolution is limited with web publication.  Actual location was identified by Scott Boyd of Emerald Sea Photography.

Enhanced Side Scan Image from 150' Side Scan image from 75'