YMS - Typical Plans
YARD MINE SWEEPER
   PILOT HOUSE and BRIDGE DECK: are next below
                                     along with DRAWING ORDER NUMBER

          MAIN DECK: is in three sections; on PAGE TWO
                                        BOW,  MIDSECTION, and STERN

                01-DECK: is in two sections; on PAGE THREE
                                        BOW and STERN

                      INBOARD PROFILE: is in two sections; on PAGE FOUR
                                                                      BOW and STERN

        Some day all the plans will be like that drawing - below.
See: JOHN WAYNE'S YMS

This is a BINNACLE
a housing for a compass
There are three YMS minesweepers located in Lake Washington.  Two of these vessels are very much intact.  The SCRET diving teams have 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.






         Member