منابع مشابه
Shipboard Automatic Watchstander
Crew sizes in the Navy and Coast Guard continue to decrease. Optimally or minimally manned crews complete ever more complex and varied mission sets. Accordingly, crews rely on sensors and automatic operation to perform a host of duties formerly completed manually. The Non-Intrusive Load Monitor (NILM) provides a low cost, low-maintenance, rugged, easily installed tool for machinery monitoring f...
متن کاملControl of Shipboard Cranes
We propose a new shipboard crane configuration for offloading cargo in open seas. We show that the “Maryland Rigging” crane of ship’s configuration, used in association with a friction control mechanism, provides a very effective method for reducing load pendulation caused by the motion of the crane in the roll direction. The effectiveness of the control technique is obtained by comparing the p...
متن کاملArtificial Intelligence and Rubble-Mound Breakwater Stability
Breakwaters are coastal structures constructed to shelter a harbour basin from waves. There are two main types: rubble-mound breakwaters, consisting of various layers of stones or concrete pieces of different sizes (weights), making up a porous mound; and vertical breakwaters, impermeable and monolythic, habitually composed of concrete caissons. This article deals with rubble-mound breakwaters....
متن کاملInspection and Diagnosis of Sines’ West Breakwater
A set of tools that is being developed for the automated inspection of rubble-mound breakwaters, as well as its application to the survey of Sines' west breakwater armour layer, are described. The results from the IRIS surveys are compared to those of the surveys carried out by the Portuguese Hydrographic Institute and first assessment of the structure evolution between 2000 and 2003 is made.
متن کاملForced Motions of a Rigid-Body Breakwater
Now the last and most realistic problem will be investigated. This problem treats the breakwater as a rigid body that undergoes periodic wave forcing. This problem is the most realistic because a breakwater truly has physical dimensions in reality and would behave as a rigid body. Furthermore, if a breakwater is in the sea, then it will feel the effects of waves acting on it and not just the ef...
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ژورنال
عنوان ژورنال: Journal of the Waterways and Harbors Division
سال: 1958
ISSN: 0569-8103,2690-4047
DOI: 10.1061/jwheau.0000073