According to Delaware online the MV Russell W. Peterson was formerly the MV Wolverine. From the article:
Mike Kaszuba, a civilian Coast Guard investigator assigned to the Delaware case, confirmed that the agency is probing the ship's maintenance history in Texas and Louisiana -- including handling of past serious problems with cracking, corrosion and structural shortfalls.
Those problems blocked the Wolverine from approval for its originally intended job as a "liftboat,"
"It wasn't certifiable as a liftboat," Kaszuba said Thursday. Although the previous owners had sought certification, they withdrew before meeting the rigorous safety standards, he said.
The article: Doomed boat failed safety check is here - read the comments as well.