Again, Vallich is purely a local god to Nordland. You cannot try to force the entire work and worship of all ship-builders throughout the Old World onto him. He doesn't have that purview. He is the God of Ship Building...in Nordland. Much like how Guvuar is the God of Bulls...in Ostland. You are vastly overinflating a local God's influence on a multi-national Cult which is established across the Old World. People in Averland who drive their herds to market do go wailing to Guvuar that their prize bull isn't mating enough with the cows and that his herd is suffering as a result.
As for just what priests/favored of the Gods can manage, there are vast differences, even in the canon novels by GW/BL. I recall one instance, can't find specifics unfortunately, it was related to me by another, where a regular 'average' Warrior Priest of Sigmar was blowing marauders and Chaos Warriors apart with shockwaves of his hammer - I believe it was a Wulfric the Wanderer novel. Not a Grand Theogonist, not an Arch-Lector, just 'a' priest. Using his hammer in the purview of the domain of his God, fighting Chaos and defending the weak and what not. Sometimes, they are 'just' okay, right up until they really need to get going, like in the
Mark of Chaos trailer. Or like the guy who took down Vlad with the immense spiritual strength to read from the correct dread tome, then tackled him onto a spike down below, without anything overly physically showy. Another time, a priest of Taal splashed some water on a daemon during Mandred Skavenslayer's time and it burned the daemon a bit. A
bit. Taal is far less constantly worshipped by nearly as many people as Manann is, if nothing else. Artifacts and blessings of Myrmidia can literally alter your capacity and skill at command and tactics, as in directly altering your mind and 'improving it' within the remit of the God's domain. The same is true for all the Gods. The presence of the Antler of the Blue Stag of Taal suddenly shoots up the local communities skill with weapons.
The Bountiful Net, a canon artifact of Manann, grants you INFINTE strength to pull ANYTHING from the bottom of the ocean, so long as you put in the hard work, which it is, every time. Which can include a single fish, several tons of gold, or your own old ship which sank to to the bottom, which was its literal first usage as an artifact. Manann isn't known as the local 'God of Fishing', but he can bless a net to pull ships out of the water, or an entire school of fish, or almost anything else.
I'm just...struggling here, with the idea that the God whose whole thing is the Ocean/Tide/Rivers Is My Thing and the Sea-Born who are even specially Blessed people who Live On The Water Always wouldn't have some weird stuff they (or that he could help them) could do to like, commune with the spirit of the ship all One Piece style or be able to hear its health through listening to the wood of the deck by pressing their ear to it and so on. Up to and including, yes, possibly picking them apart and putting them back together again without too much difficulty if the Sea-Born can repair ships at sea without too much difficulty, supposedly with the aid of Manann, without ever having to go into port.
I'll take a look in the morning, man, but it's almost midnight and I'm exhausted. If it came across as, like, a 'gotcha' to the vote maker, I did not intend it to be seen as such. I just followed along with Frederick suffering massive bloodloss and drinking a lot to get over the pain immediately before going into the conversation. Apologies to anyone who feels like it was a jab.
Frankly, I was astonished no one voted for, like, just take a
nap instead of going on a city-wide booze tour immediately after the keelhauling.
EDIT: As for how the Matriarch was talking, that...to me was Maghda just being genuinely concerned that Frederick was all right? Like, she's seen people bump their head on the ship before, and they were fine, talking, etc. and then an hour later they were babbling or just dead because it turned out that they
weren't all right like they'd thought. Like, he seemed fine immediate post-keehaul, oh no, he's not fine, oh no. But, again, I can look into it in the morning whenever I wake up as, it is in fact now past midnight as of me editing this.