Innovations in Harbor Wave Mitigation: Developing a Wave Absorbing Wall
Harbors are designed to provide the calmest possible sheltered waters for the moorage and berthing of ships. However, the standard piers and dock walls used in most harbor construction are largely the type that aggravate wave agitation rather than calm it. Harbor quay walls and perimeter walls are typically built as a solid vertical face. This makes it easier to moor a vessel, and maximizes the usable water and land area on both sides of the wall. Unfortunately, when waves interact with these solid vertical surfaces, they reflect directly off them, with little to no energy absorbed or dissipated.
Being in the marina consulting and management business since 1988, I have had the opportunity to visit and work with hundreds of marinas worldwide and if I can say one thing unequivocally about marinas, it is that marinas are not disciplined as to how they run their business. Whether it is a company with multiple marina operations to a single marina owner operator, the interpretation of a given policy is as fluid as the water in their marina.
With that said, why do you need a policies and procedures manual for your marina? First and foremost, it is about maintaining consistency in your organization and preventing problems before they arise.
When a fluke storm destroyed the breakwater dock at Legendary Marina late last autumn, the Destin, Florida, marina was in a state of emergency, according to Jeremy Holcomb, vice president of operations. “We were very close to not being operational. If the rest of Echo dock would have gone, we would have lost all of our interior staging—Alpha, Bravo, Charlie and Delta docks.” That loss would have impacted hundreds of Florida boaters.
Hoist Liftruck offers the Neptune Series, with a spacious cab, air ride seat and tilt steering to provide maximum operator comfort, even in hot weather. The company said the latest CAD three-dimensional technology was used to develop the lift truck for performance, durability, operator safety, comfort, visibility and serviceability. marina lifts are subject to water damage and rust, which is why each Neptune is galvanized, utilizes stainless hardware, put through a three-step paint process, and ultimately powder-coated, to provide maximum corrosion protection. Custom colors and options are available to create personalized boatlifts. The Neptune Series has a capacity range up to 60,000 pounds.
For the underwater diving and boating community, Starfish introduces an underwater drone, connecting its operator on the surface with a 300-foot umbilical cord, designed to haul objects to the surface. The four 12-volt thruster motors are used to maneuver underwater with a video camera on-board, as well as a grappling claw, capable of securing items weighing up to 300 pounds.
Aurora Boat Care Products offers VS721 Bottom Coat™ to combat zebra mussels, as well as algae and barnacles. Each female zebra mussel can spawn up to 2 million each year and attach to boat bottoms, weighing and slowing down boats and moving mussels around. The VS721 polymer is more slippery than water, so zebra mussels can’t grab hold. The VS721 Bottom Coat Seals protects the gelcoat against water mitigation and osmosis blisters. It works on fiberglass, aluminum and hard painted surfaces. Before using VS721 Bottom Coat, the surface must be clean and dry.