Location: SASEBO, Japan

Inspection, Analysis, and Design of U. S. Navy Facilities ​

Childs Engineering Corporation was tasked by NAVFAC with conducting routine Waterfront Facility Inspections at 89 facilities in Japan, and determining the adequacy of mooring hardware layouts and capacities based on ships that are commonly berthed at 13 of the Fleet and Industrial Supply Center (FISC) fueling facilities in Yokosuka and Sasebo, Japan.

To accurately calculate the forces transmitted from the vessel to mooring hardware, each berth was laid out with OPTIMOOR Mooring Analysis software which allowed different vessels to be analyzed along with any necessary modifications to the mooring hardware layout.

The mooring hardware was analyzed for shear failure in the bollard and overturning, sliding, and bearing failure in the base to make sure the hardware was either sized correctly or able to withstand the estimated forces. In areas where possible conflicts existed 3-D models were used to visualize the berths so any modifications, if needed, could be made.

Childs Engineering personnel deployed their portable hydrographic survey equipment, and conducted hydrographic surveys at all of the terminals. With this information it was possible to identify which berths were currently limited by the depth of water.

Based on the findings of the Waterfront Facilities Inspection and the berthing analysis Childs Engineering oversaw a pull testing and geotechnical program prior to furnishing a full set of design plans and specification for all the facilities in Sasebo.

Project Type: Piers and Wharves, Hydrographic Survey, Inspections