They Fought!

Namor had chosen a thoroughly inappropriate moment to make a grand move—wanting to weaken Krang's fighting force as much as possible, he had decided to strike at Krang's ally, the Roxxon Corporation, first.

But perhaps Namor had spent too long in Atlantis, or perhaps water had gotten into his brain—this possibility seemed more likely—because he had completely forgotten one thing: one Roxxon Corporation ship could not represent the entire company. Even if he really smashed the ship, the company would still have more than enough strength to continue its operations.

Not to mention that he had long since learned from the Avengers that the person behind all this was actually Enchantress Amora. And would Amora really care about a ship full of mortals?

As for Dario Agger, if Thor had not been standing nearby, he would have transformed into a Minotaur and had a proper fight with Namor. But with Thor there, why waste the effort?

As for Thor, though he was angry, he had no intention of attacking these people. Some of them might have been Hydra agents, but Thor did not believe a company could have every employee working for Hydra. The risk of exposure would have been far too great, so there were actually many innocent people aboard this ship.

Besides, Thor had not considered the possibility of Loki cooperating with Hydra. He only believed that the Roxxon Corporation had been enchanted by Amora. This way, Amora could hand the Winter Box to Roxxon's people and have them deliver it to Krang, thereby nominally freeing Asgard from directly interfering with Olympus.

In light of all that...

"Stop, Namor. Your attack here has no meaning. Most of the crew are innocent. Even if you intend to act, dealing with them will not help you fight the Winter Box."