First off -- thanks for the quick reply MaG.
OK -- I went to the piling by the motorboat --- when the cursor was placed over the number it never changed from the down arrow -- there was no acknowledgement from Nancy. I checked the number up on the crows nest again, and there was an acknowledgement from Nancy. Tried the cupboard puzzle again -- no good. It seem the acknowledgement from Nancy at the piling number is important, but --- it doesn't happen.
Anything else I should try?
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Tried something else: Went back to the depth charts again, placed the locator in the correct location and got a response from Nancy, "Got it! These are the four numbers for that lock," Went back to the cupboard puzzle and everything worked! Great! (I had that locator in the correct position earlier which gave me the remaining two numbers, but apparently never got the response from Nancy ??)
Thanks for your help MaG!