Company owner Tim McKenzie said four of this divers, including himself, attended.
"When we got there it was already on the bottom of the seabed," McKenzie said, which he estimated was about 5m deep.
"We have liftbags which basically we fill up with air which gives vessels buoyancy. We then got underneath it with travel lifts, and pumped the water out of it."
He said he didn't catch the name of the stricken yacht, and said the cause was uncertain, and that it was "due to be scrapped anyway".
"It could just be old age, it wasn't looked after, there was lots of mussel growth under it which really adds to the weight."
Dive Hard has been nominated for the local Hawke's Bay Business Awards emerging business category.