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The rapid growth of IT technology has enabled ship automation systems to gain better functionality and safety with reduced costs and crew numbers. Nowadays, the remote maintenance services for the systems are required because a ship may be located in a very remote area. To provide the remote maintenance services, some issues such as how to collect the ship automation systems data, how to monitor a ship's data from onshore offices, how to get support from experts while sailing, and how to reduce the maintenance costs, should be addressed. In this paper, we propose a remote ship maintenance system for remote monitoring and diagnostics of ship automation systems, which is based on both a ship area network to integrate separate system networks and a ship-shore communication infrastructure to support a remote access using satellite communications. Finally, we present the function test to verify the applicability of the proposed system.

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Recently, an environmental issue for ballast water which helps a ship maintain a balance has been discussed.To prevent ballast water from causing marine pollution, the IMO adapted the International Convention for Control and Management of Ship's Ballast Water and Sediments. As a result, all ships must install the BWTS by 2017. There are several methods of processing ballast water. The BWTS which is discussed in this paper uses electro-chlorination and is named as HiBallast(Hyundai Intelligent Ballast). We have analyzed operations of the HiBallast and implemented control sequence of these operations in a form of function block diagram by logic configurator based on IEC61131-3.Also we have implemented the HMI which enables user to control and monitor the HiBallast. In this paper, we explain the operations and implementation of the HiBallast and the FAT(Factory Acceptance Test) for verifying performance of the BWTS.

In this paper, we proposed SASN (Ship Area Sensor Networks) model which is integration of wired backbone network (Ethernet) and wireless sensor networks (IPv6 over Low-power Wireless Personal Area Networks, 6Lo WP AN). The proposed integrated network model has some limitation compared to sensor networks which is composed of only wired networks because of poor RF environment of inner ship area. However, if SASN model is adapted to ship, it helps to monitor the status of the work circumstance and various equipment more efficiently than only wired sensor networks because of independency from network line. We described characteristics of 6LoWPAN in detail and check the suitability of SASN model to ship based on characteristics of 6LoWPAN. In addition, we did performance analysis through simulation. From simulation result, we showed that proposed SASN model which is composed of Ethernet backbone and 6LoWPAN is possible to be adapted to ship.