Logical Solution News

As we see the introduction of storage and renewable energy sources on board ships, a new design philosophy for the electrical power networks is required, especially given the trend towards higher safety standards, better reliability and the reduction in manning. Until recently, electricity on board was largely generated by diesel engine driven synchronous generators. The majority of electrical consumers were linear loads, like induction motors, lighting and heating, which means that  the current three-phase, AC electrical grids are very suitable.

It takes nonstop work to maintain America’s position in today’s global economy. Every day we compete against strong international rivals for demanding foreign and domestic customers. Thankfully, the American economy has a large-scale, crucial asset that gives us an edge on the rest of the world: over 28,000 miles of inland river and coastal waterways with consistent navigation at suitable depths (9 feet during 9 months of the year) – more any other nation on earth. Although we have the world’s greatest industrially-useful waterway network, we are barely using its full capacity.

GAC’s in-house ship-to-ship transfer expert GAC Transfer Services (GTS) has responded to growing demand for LPG imports and exports of clean products in the Indian Subcontinent with the establishment of a new fully-equipped base in Sri Lanka. Ship-to-ship (STS) equipment such as fenders and hoses, in accordance with industry standards, is stored at GAC’s base in Galle, which is strategically located at the southern tip of the island nation, and is ready to be transported by tug to different locations according to demand and conditions.

Naval Surface Warfare Center Carderock Division (NSWCCD), a field activity of Naval Sea Systems Command (NAVSEA), was host to a first of its kind weeklong summer institute for high school science, technology, engineering, and mathematics (STEM) teachers, June 28 - July 2, at the West Bethesda installation. "The goal of the institute is to expose teachers to the real-world of engineering so that they can bring relevance to the material they are teaching their students," said Toby Ratcliffe, NSWCCD's outreach coordinator and event hostess. For the initial summer institute, high school teachers from Maryland's Montgomery County and the District of Columbia were invited to Carderock to get a tour of the facilities in which the scientists and engineers work…

It was the late 1970s and El Paso Energy ran a liquefied natural gas (LNG) terminal known as Cove Point in the heart of the Chesapeake Bay — midway between the East Coast ports of Baltimore, Md. and Hampton Roads, Va. As the demand for gas waned, the terminal ceased operations after only two years, and it sat dormant for nearly two decades. Today the market for LNG is rising fast, with positive ripple effects being felt across the maritime niche. Two tug companies — McAllister Towing and Moran Towing, were tapped to help bring the terminal back to life, winning the contract to dock some of the world's most expensive ships. Ensuring that the job is done correctly has required a significant investment in boats and training. — By Regina P.

Wärtsilä Corporation introduces a new compact, high-performance waterjet that is optimized for fast vessels. The new Wärtsilä LJX waterjet offers, in comparison with other waterjets available today, a 25 percent reduction in mounting flange diameter, a 10 percent overall weight reduction and a 35 percent increase in cavitation margin. The LJX waterjet allows further innovation in fast vessel design. The new Wärtsilä LJX waterjet is being developed to allow an optimum number of waterjets to be chosen for a given propulsion power requirement without requiring an excessive transom width in high-speed vessels. Generally, when selecting waterjets…