One of the goals of high school senior projects is seeing a need in the community and filling it. That's just what Ryan Rooney and Emma Martinsen are doing.

The two teamed up when their shop teacher Winston Davies told them that boat carts had fallen into disrepair. They saw it as an opportunity to put their welding skills to use by building new carts for people hauling supplies to and from their boats.

"It seemed pretty straightforward, and it didn't seem like there were very many carts there," Rooney said. "The ones that are down at the harbors aren't in very good condition, and it's not...