In 2014, HEGER designed a steel floating drydock based on parameters provided by BAE. The dock was designed to meet the requirements of the US Navy’s MIL-STD 1625D and the American Bureau of Shipping for lifting vessels displacing up to 55,000 long tons. The dock’s design vessels were considered to be the LHD/LHA hull, LPD class, and support the tandem docking of two DDG-51 class vessels. The dock is also capable of docking large cruise ships such as the Diamond Princess.
The floating drydock design included naval architecture evaluations, structural designs, equipment sizing, layouts and schematics for various mechanical and electrical components. Notable outfitting items included a fixed 3-point mooring system, vehicle access bridge, pedestrian gangways with utility services, powered vessel handling system, wingwall cranes (not designed by HEGER), various collection tanks, etc.
The dock design package included design drawings, specifications, and an operating manual with architectural, structural, mechanical, electrical, and HVAC details.
HEGER also assisted BAE in developing a Facility Certification Report (FCR) which was submitted to NAVSEA for review prior to commissioning and certification.
After being built in 2016 by Qingdao Beihai Shipbuilding Heavy Industry Co., Ltd. In Qingdao, China, the dock was delivered in three pieces to San Diego, California via wet tow.
After the dock was assembled and installed in its mooring gripes the dock was certified by NAVSEA and put into service in February of 2017.
HEGER continues to provides ongoing engineering support with routine maintenance inspections and vessel specific calculations on most dockings.