INNOVATION May-June 2019

2O18 ♦ 2O19 PROJECT HIGHLIGHTS

NOVEL AUV DEPLOYMENT FOR “FERRY FREE E39”, BJORNAFJORD In September 2018, DOF Subsea Norway AS was awarded the contract for Statens Vegvesen to perform geophysical mapping in Bjørnafjord in Norway. The project was executed using the HUGIN AUV “Chercheur,” owned and operated by BC company Ocean Floor Geophysics Inc. in combination with the small survey catamaran “GeoCat” owned by DOF. The aim of the work was to obtain the necessary basis for engineering design services for a bridge over Bjørnafjord in connection with the “Ferry Free E39” project. The project was planned as a novel low-logistics shore-based launch of an AUV, supported by the small vessel equipped with a system to provide positional updates to the subsea vehicle, eliminating the requirement for traditional ROV and an offshore-sized vessel, but still providing the high-quality data.

Ocean Floor Geophysics Subsea Project Engineer/ Chercheur ProgramManager: Alison Proctor, P.Eng.

LONG-SPAN TIMBER GRIDSHELL At 88 metres in diameter, the large dome in the new Taiyuan botanical gardens is one of the world’s longest-spanning timber gridshells. The largest dome features a tropical biome, and is accompanied by two other gridshell domes: a 54 metre-span desert biome and a 43-metre-span aquatic biome. The parabolic shell-like structures range from 11 metres to 29 metres in height. All three gridshells comprise slender doubly-curved glulam beams arranged in multiple layers, with up to 1.1 metres’ depth for the triple-beam buildup. Bespoke doubly-curved glass will make up the structure's envelope. The geometry of all components was created parametrically, and every beam in the domes is unique. Each dome was split into pre-fabricated panels of individual glulam beams, and installed in a carefully planned construction sequence. The result is a series of beautiful long-span timber structures, which will be a world-class attraction for Taiyuan, China. Participants: Gerald A. Epp, P.Eng., Lucas Epp, P.Eng., Brandon Sullivan, Kyle Sullivan EIT.

CNG-O-200 COMPRESSED NATURAL GAS CARRIER CONCEPT DESIGN North Vancouver’s Capilano Maritime Design Ltd.

provided naval architectural and marine engineering services for the concept design of a novel compressed natural gas carrier. The 185-metre by 31.4-metre, 200 million standard cubic feet Optimum

compressed natural gas carrier, known as the CNG-O-200, includes a new CNG storage system design developed by Australia’s Global Energy Ventures (GEV). The storage system design calls for the use of tightly clamped high-strength steel pipes running the entire length of the cargo hold. Capilano Maritime Design Ltd. developed a novel hull subdivision scheme to meet stability standards while still providing a cargo hold uninterrupted by watertight bulkheads. In January 2019, GEV received approval-in-principle from the American Bureau of Shipping (ABS). Negotiations with several Asian shipyards are currently underway for the construction of the vessel(s). Project Owner: Global Energy Ventures: John Fitzpatrick, P.Eng. (APEGA), David Stenning, P.Eng. (APEGA). Naval Architect: Capilano Maritime Design Ltd.: Massimo Vanfretti, P.Eng., Chris Mulder, P.Eng.

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