![NTSB reports on Maunalei propeller blade crack](https://www.marinelog.com/wp-content/uploads/2019/12/NTSB_Seal_White-300x225.jpg)
NTSB reports on Cooperative Spirit contact with bridge
The National Transportation Safety Board has issued its report on the March 15, 2020, incident in which the tow of the 1975-built American River Transportation Company towing vessel Cooperative Spirit broke apart