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2017 July August Marina World

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The magazine for the marina industry

Floating breakwaters 20

Floating breakwaters 20 x 6 x 2.4 m - 130 t: the largest off the shelf Made in Italy Pontoons, breakwaters, piers for super yachts, floating bridges and constructions: the best solutions for connecting sea and land by means of strong and reliable structures, in aluminium, concrete or steel, standard or tailor made. Gocek - Turkey: 300 m of 130 t precast modules for D-Marin Gocek Let’s shape together your new marina Tel. +39 0422 702412 info@ingemar.it www.ingemar.it Pontoons and constructions over the water

WATERFRONT DEVELOPMENTS The Wharf at an early phase of construction. Market Day Docks are in the lower right hand corner. along the Washington Channel where the tall ships once docked and maritime trade flourished. The Channel is 15-20 ft (4.6-6m) deep for mooring purposes and that depth has been maintained without further dredging for more than a century. A 2ft (0.6m) tidal change provides adequate flushing to maintain water quality. A tidal gate allows water to flow between the Tidal Basin and the Channel during ebbing tides. The features of the old port are gone except for a small part of the original Fish Market building. However, its spirit lives on in the lively seafood market on the barges adjacent to the new Market Pier. The team After years of planning and persistence, Monty Hoffman of PN Hoffman won the rights to redevelop The Wharf in 2006. As happens with large projects, the ownership structure has evolved into a joint partnership of PN Hoffman and Madison Marquette with some additional local partners. The ownership group is called Hoffman Madison Waterfront (HMW). Both firms are preeminent large-project developers. Phase 1 will be completed in October 2017 and Phase 2 is under way with completion scheduled for 2021. Waterside construction “What is unique at The Wharf is that we approached the design from the waterside,” said Rob Sloop, project director at Moffatt & Nichol, the principal engineer on the waterside. “The water was primary. We wanted people to arrive by water via many different modes, and we wanted the experience to be tied to the water.” A quarter-mile-long replacement seawall and six new piers are being built by Cianbro Construction in Phase 1, including a pier to accommodate Entertainment Cruises and their commercial cruise fleet. Phase 2 includes three more fixed piers and the largest marina element, The Wharf Marina. Bellingham Marine built all floating dock and gangway structures to date. “Hoffman Madison Waterfront was interested in quality finishes and the potential for megayacht moorage,” said Eric Noegel of Bellingham Marine. “They toured some of our large-yacht marinas in Florida and felt we had the right combination of product and project management experience.” The waterside The first marina component is the Market Pier Day Docks with 30 slips and 1,000 ft (305m) of side tie. Moving southeast, or downstream, the next structure is the fixed Transit Pier with attached Transit Taxi Dock, also a concrete floating dock. The longest pier in the project is called District Pier where large vessels will moor. The District Pier will host tall ship festivals and “ships of state” that are expected to once again call at the port of America’s capital city. Following the District Pier, new floating dock marinas are replacing two existing facilities. Bellingham Marine has completed a 100-slip facility at the members-only Capital Yacht Club. Next to the yacht club will be a new 200-slip marina with 2,520 ft (768m) of side tie. The Wharf Marina will be completed in Phase 2 and is planned to have heavy-duty floating docks and power to accommodate megayachts, including high-end services and crew facilities. Bellingham Marine has already completed a section of Wharf Marina called Z-Dock to reposition tenant boats in both Phase 1 and Phase 2. Between the two marinas is the Recreation Pier, designed in a long, gradual curve with undulating vertical contours. The unusual design required hundreds of unique fixed-pier structures to achieve its irregular shape. Rec Pier, as it is known, will be surfaced in Kebony, a hardwood-like Norwegian decking product of treated wood with a silver-grey patina. Rec Pier will have a number of visitor activities including a public kayak and stand-up paddleboard launch. Further down is Pier 4, a dock for Entertainment Cruises and the District’s only office on a pier. Across the channel at Hains Point will be the East Potomac Park Hop Dock for kayaks and other paddlecraft. Construction challenges The major challenge was access. Because the land contractor dug a milelong, 40ft (12m) wide trench the entire length of the waterfront, equipment and materials had to be positioned by barge. “Our floating dock contractor and our heavy marine contractor were all working shoulder to shoulder in the same space,” said Sloop. Complicating matters further, services had to be maintained for existing marina tenants, many of whom were live-aboards. Special care was required to avoid driving piles in areas where WMATA (Washington Metropolitan Transit Authority) has tunnels under the Washington Channel. In spite of the difficulties, the waterside contractors coordinated their work and sequenced events seamlessly. Three planning principles Waterfront planners can choose a range of strategies from simply renovating what is there to reimagining the city and its water bodies. The Wharf is clearly in the latter category. The Wharf’s master planner is architect Stan Eckstut of Perkins Eastman, whose portfolio includes Battery Park in New York, Baltimore’s Inner Harbor East and Rainbow Harbor in Long Beach. Shawn Seaman, executive vice president and principal at PN Hoffman, is the project director. “Our team developed three guiding www.marinaworld.com - July/August 2017 17

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