Message in a Bottle
From Ultima Online Forever Wiki
Description
Message in a Bottle (MIB) is the Treasure Map of the high seas. When you look inside the bottle, you will find either a Waterstained SOS or, less commonly, an Ancient SOS . Within the message, you will find coordinates to a sunken treasure chest. You will need at least 80 Fishing to have a chance of pulling up the chest. Some patience may be required to fish up the chest, you may find many an old boot before you hit the jackpot. Using a Bent rod will pull up the treasure chest without pulling up junk items first. It is generally recommended that you collect a few MIBs and then group them up by location before sailing out.