Defeat the watcher.
A dwarven hauberk and 100-200 gold.
Find the watcher in the water and kill him
First, you will need to swim for this entire fight, so make sure you are not encumbered and have plenty of endurance. You will be fighting The Watcher in the Water and up to four A mighty tentacle of the Watcher, however they do not protect so to make sure you are hitting the right thing you simply need to.
kill watcher
When the watcher dies both tentacles will also die.
do swim w,swim s
If you get the message A fierce current prevents you from moving south! then the quest is in. Wait for the watcher to appear, then.
kill watcher
Watch both your health and endurance during this fight, as wimpy will not work (because you are swimming), leave to heal and return as neccesary. Once the watcher is dead.
do swim s,roll log
If any of the information here is missing, or wrong, please let us know.