Highlighter Summer2016

The Highlighter Summer 2016 7 that deals with large ships, water and the potential wrath of Mother Nature. In Japan there is also concern for typhoons and tsunamis. The rules set by the American Bureau of Shipping (ABS) require design for adverse weather conditions up to a 100-year recurrence interval. To comply with this requirement additional wave and hydrodynamic modeling efforts to compensate for the lack of available historic water level or wave data at the SPMS buoy location inside Kin Bay, Okinawa where conducted. 100-year typhoon wind speeds were estimated for Kin Bay based on the IBTrACS database. All typhoons passing within 100 km of the site were included in an extreme value analysis to obtain a conservative estimate of the 100-year wind speed. A 100-year significant wave height offshore of Okinawa was obtained from a recent scientific publication. A peak wave period of 12 seconds was assumed for this wave height, a relatively long period for waves that are actively being generated in a typhoon. A dynamic analysis of the system was conducted and included evaluations against adverse weather events such storms, wind gusts and tsunamis. The system design loads were developed to accommodate loadings from all of these types of events. Anchor Chains and Underwater Hoses The Government of Japan is participating in the project by supplying and installing the anchor chains and the underwater hoses which will be used with the SPMS buoy. Therefore, it is imperative that Pond’s designs and specifications include guidelines and equipment that are compatible with what the GOJ is installing. Coordination with GOJ and DLA is integral to ensure that this project is organized effectively. Overall, the benefits of adding this new SPMS will allow larger vessels to anchor away from the shore more frequently, allowing them to save time by not docking near land. This new SPMS will also allow the decommissioning of an existing three- legged mooring that is closer to shore and occupies a valuable fishing area that can be returned to the GOJ. This new SPMS will allow the return of desired fishing waters back to the Government of Japan while allowing the U.S. to maintain its mission capabilities. Chris Patterson Senior Project Manager Single point moorings are capable of handling extra-large vessels in a better capacity than certain loading docks The transportation and community development program is focused on continued growth through adding new services and spreading our footprint across the country. We know through our efforts we will be able to build on Pond’s excellent foundation and continue to be the customers’ first choice! Allan J. Iosue, PLA, LEED AP BD+C Program Manager | Associate