Map of Isle of Shoals

               ----
              | AD |
               ----
             /      \
        ----          ----
       |    |        |    |
        ----          ----
      /                    \
 ----                        ----
|    |                      |    |
 ----                        ----
      \                    /
        ----   ----   ----
       |    | | U  | |    |
        ----   ----   ----
             \  |   /
               ----
              |    |
               ----

Floor 2 - Lighthouse
---- | UD | ----
Floor 3 - Lighthouse
---- | D | ----

Key:

AD - Andrea-Gaile Dock
D - Down
U - Up