Find Weligon Steelherder in the back room on the ground floor of the Deepwater Knights at -1040.07, -390.45, 51.72
You say, 'hail Weligon Steelherder'
Weligon Steelherder says 'Hail, Runengetum ! This is the Deepwater Temple. Here you shall find the wisdom and courage of Prexus, the Ocean Lord. I am glad to see you have an interest. Forgive me if I cut our conversation short, but I have many [Deepwater tasks] to complete.
You say, 'what deepwater tasks?'
Weligon Steelherder says 'We here at the Deepwater Temple must tend to the [Peacekeeper battlestaff] and the [Deepwater harpoon] as well as other duties such as [ocean protection]. There is always something we must do.
You say, 'what deepwater harpoon?'
Weligon Steelherder says 'We do not award the Deepwater harpoon to just any paladin. Nobility is all well and good, but you must still prove yourself. We have heard rumors of a very distressing matter. Perhaps it is your calling. Are you ready to [prove allegiance to Erudin] and earn the Deepwater harpoon?
You say, 'I will prove allegiance to Erudin'
Weligon Steelherder says 'Yes, you are ready. We have heard rumors of a great bridge which will connect Antonica with Odus!! This must not happen! We must shield ourselves from the savage and evil ways of the other races. They say that a list exists. A list of three grand architects who wish to see this bridge erected. You will venture to Qeynos and find the list, then exterminate these three men. Return the list along with their heads and the Deepwater Harpoon is yours. Go!!
Go to South Qeynos and find Hansl Bigroon in a building at 279.60, -349.01, 3.75 and hail him:
You say, 'hail Hansl Bigroon'
Hansl Bigroon says 'Greetings, Runengetum ! Are you a [citizen of Qeynos] or are you a [traveler of sorts]?
You say, 'I am a citizen of qeynos'
Hansl Bigroon says 'Then you are aware of how few ships come and go to the continent of Erudin. The port authority is even planning to tax all passage aboard the ships. You will be happy to know that a few other engineers and I are designing a [titanic bridge].
You say, 'what titanic bridge?'
Hansl Bigroon says 'My grand plan has always been to erect a bridge which would span the distance between Qeynos and Odus. It would bypass the city of Erudin. Antonius Bayle would take full control of the bridge and its adjacent territories. This has had some opposition in Erudin, but for the most part, they just believe it is impossible to build such a bridge.
You say, 'I am a traveler of sorts'
Hansl Bigroon says 'Ah, yes! Traveling can be truly dangerous. Have you ever been to Erudin or do you not care for that place?
I have not progressed any further with this quest yet. The other quests hinted at in the text are the Weligon Steelherder Pearls of Opus Quest and the Weligon Steelherder Barnacle Breastplate Quest detailed seperately.