Kraken!

Offer — Harbourmaster Quill: “Three boats this season, adventurer. Three. Something huge lives in the deep water off the strand's far end, and it rises when anything comes close. I want it gone.”

While you work — “Kraken's Reach is at the western end of the strand. Its arms reach a long way.”

On hand-in — “The harbour will drink to your name tonight. Here's what the harbour fund can spare.”