Bryan Dealing yells, “Stand by! Let it go! Twenty-six feet!” and then, splash! The diver, with his hand gripping the weighted rope that leads into the sea below him, steps off from the back of the boat into the cloudy, dark waters of Everett’s Port Gardner. It’s the middle of February. While not raining, the wind blows hard across the chilling water and the boat deck offers little protection. Fully covered in neoprene, the diver will repeat this routine dozens…