by GeorgeWebManHopperE | Mar 28, 2021 | Shipbuilding and Marine
The admissible air draft for a ship passing beneath the bridges of the Carquinez Strait was not known. HEA established minimum air draft requirements for passing in and out of the Carquinez Strait during any one week. This information enabled the shipbuilder to add...
by GeorgeWebManHopperE | Mar 28, 2021 | Shipbuilding and Marine
It was thought that waves generated by launching large vessels damaged a pier. HEA performed a detailed failure evaluation of the pier and demonstrated the damage was not attributable to launches. The damage was found to be caused by dry dock mooring loads during...
by GeorgeWebManHopperE | Mar 28, 2021 | Shipbuilding and Marine
It was desired to extend the length of a carriage way to accommodate hauling larger barges. HEA designed an extension of the existing rail system, which integrated fully with the existing rail. HEA also designed an upgraded winch and pulley system to accommodate the...
by GeorgeWebManHopperE | Mar 28, 2021 | Shipbuilding and Marine
Adjustable connections for several bolt sizes are required for mounting shipboard equipment in a vibratory environment. HEA designed adjustment plugs that allow for connection of bolt holes with poor alignment and provide slip resistant vibration mounting integrity....
by GeorgeWebManHopperE | Mar 28, 2021 | Shipbuilding and Marine
Deck plate thickness wastage was observed in a shipyard floating dry dock. HEA evaluated the admissible floater deck plate wastage. Stress and buckling limits were established. The existing deck plate thickness wastage was deemed acceptable.
