A system that rings an alarm and flashes a light in a ship's wheelhouse just seconds after a steering gear failure occurs has been designed by the Sperry Division of Sperry Rand Corporation.
Called the "Steering Failure Alarm," the system is intended to prevent groundings and collisions attributable to steering gear failure, an important cause of ship accidents.
The system will be installed on nine liquefied natural gas (LNG) carriers being built in the United States and France for El Paso LNG Company. In addition, a system has been ordered for a Chevron oil tanker.
The Steering Failure Alarm contains patented circuits which respond almost instantaneously to a discrepancy between the rudder's actual position and the position which is indicated by a computer simulation. If the discrepancy is greater than a preset value, the system sounds an alarm within two or three seconds.
"The system is independent of the ship's steering control system," according to Henry H.
Johnston, marketing manager for Sperry's marine steering gear program.
"It uses two basic signals— rudder order and rudder angle— provided by separate transducers on the helm and rudder. If the ship already has a separate rudder angle indicator system, it can be used to provide the rudder angle signal. With automatic steering, the autopilot computer output is used as the rudder order signal." Mr. Johnston said that the U.S.
Coast Guard is currently studying proposals to require a steering failure alarm system on all ships over 20,000 gross tons operating in U.S. waters. For additional information, write to Henry H.
Johnston, Sperry Division, Sperry Rand Corporation, Great Neck, N.Y. 11020.
The buying interest from Greek ship owners is focused on bulkers to an increasing extent, BIMCO said. Data from VesselsValue.com reveal that Greek owners were at the buying end of 43% of all bulker sales completed so far in 2014. As of June 2014, the number of Greek bulker purchases so far is 91, compared
and financial ramifications of a business interruption, the failure of a simple circuit breaker to perform its intended task – what GE describes as an ‘arc-flash’ event – can be devastating. Also according to GE, it can also cost you as much as $15 million, once all the variables of lost time at sea, ruined
The world is closely watching several contentious flash points that have potential to ignite. The behavior and rhetoric of China and Russia regarding vital shipping lanes in international waters have been alarming. Disputed sovereignty claims and efforts to enforce them have the maritime world on edge.
Beginning in the 1950's when the company manufactured the first electronic flash unit for cameras that utilized photo flash batteries, ACR Electronics was well on its way to making a name for itself as a leading manufacturer of high-quality strobe lights for the marine and aviation industries. Through
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more power. The new system can generate 40 to 60 per cent more power and can cut ships' fuel costs by 2 to 3 per cent when compared to the "Hot-Water Flash Power Generating Plant" which has been so far the most efficient waste heat recovery system at MHI. Thanks to its increased generating capacity
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a new credit card-size electronic chart module called the NAVIONICS Microchart. The Microchart uses the latest memory card technology and employs "flash memory" devices which consume little power and require no batteries. Several of the world's leading marine electronics equipment companies are
of natural gas fuelled ships based on the outcome of discussions held at IMO regarding the International Code of Safety for ships using gases or other low flash-point fuels (IGF Code). With regulations curbing atmospheric pollution and greenhouse gas emissions growing stricter amid stronger calls for a greener
# # # # # # # # # # # # # # # # # # # # #4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 FUSIBLE LINK (FLASH WIRE) Developed by DesertStar for their ARC-1 acoustic release, a large capacitor is fully charged, then power dumped through a high resistance
TECH FEATURE UNDERSTANDING ARC FLASH ? cation is that this information must be quirements are already entering the ma- References collected from a vessel or design while rine world and their impact will only preparing an arc ? ash study. increase. EBDG can quantify the danger [1] National Fire
TECH FEATURE UNDERSTANDING ARC FLASH like a control room, thus separating mate that worst-case arc ? ash energy a greater incident energy. This is be- crew members from a potential arcing number. cause the increased current, rather than event. While mitigating arc risk, such A few assumptions are
TECH FEATURE UNDERSTANDING ARC FLASH contrast, the numbers become an active sections called out by 46 CFR (Code of and ongoing part of safety procedures Federal Regulations) for many decades. by being labeled on the electrical equip- So, this set of standards may have the ment. These labels warn the
TECH FEATURE UNDERSTANDING ARC FLASH Arc Flash in Marine Installations By Will Ayers, P.E., Chief Electrical Engineer, Elliott Bay Design Group & Taylor Herinckx, P.E., Electrical Engineer/Naval Architect, Elliott Bay Design Group he use of electrical energy aboard • Heat from an arc can cause severe
Interview: Admiral Karl Schultz 22 Offshore Wind In the Port After four years at the helm, Admiral Karl Schultz’ tenure as USCG 40 Tech Feature Arc Flash Commandant comes to an end soon. He sat with MR/EN to reflect 44 Tech Feature Propulsion on the missions accomplished and the work still ahead
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Products Beacons, Flashers, Trackers SABIK MARINE is providing the Norwegian Coastal Administration (Kystverket) with remote monitored LED lanterns for their coastal waters. Image: Sabik software at Broadcast station and Cen- 3 to 31 nautical miles. They are ? tted Remotely monitored tral station.
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