Ye Searcher

You have found what is left of the
legendary Captain Black's ledger.

Wonderful treasures await any who
can decipher it's riddles...
April 14th, 1672
We had sailed for days through
treacherous storms, carrying
the gold we took from the Spanish.
My quartermaster was right,
it was too risky to keep on board.

I knew I had to hide the secret
while in plain sight, but how?