KR Webzine Vol.137
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07
July 2019
KR’s "virtual reality-based ship inspection simulator" is training software that enables the ship inspector to apply the rules of ship classification and practice inspection procedures in a ship's environment that is realistically constructed in a virtual environment. KR has developed a virtual reality (VR) training simulator that allows each surveyor wearing a VR headset device connected to the network, to experience a virtual ship from a remote location. Each surveyor can then check the ship building rules, survey methods and statutory requirements in the VR ship environment regardless of their connecting location. This increases safety by enabling the surveyor to become familiar with the ship and to identify any high risk accident areas in advance, in the VR ship environment.
Fig. 1 System operation concept for multi-user inspection training
Multiple users can access and train at the same time in real time, as a method of processing event messages produced and consumed by each user has been developed. In this system, Node.js server and Socket.IO interface are used to enable non-blocking and asynchronous control when processing user messages. Each user continuously sends his or her status to the server, and the server broadcasts the information it receives to the connected user without blocking, so other users can check their status. Training records for each user can also be stored on the training control server to manage and evaluate the training history.
Fig. 2 The basic structure of the network control server
Fig. 3 Multi-user control structure
The VR-based ship inspection training simulator supports multi-users by offering the following characteristics; The virtual ship environment uses real-time light source and shadow for various positions as shown in Fig. 4, and illustrates the degree of corrosion and aging of the hull based on actual images as shown in Fig. 4. Figure 6 shows training on the deck being undertaken by multiple participants. Each user can use his or her computer and VR device, regardless of where they are connected, to complete survey training with colleagues in a virtual ship environment. Figure 7 shows a scene of fire fighting as experienced by multiple users. Depending on the scenario provided, the user can practice their role in different emergency situations.
Fig. 4 ship stastus modeling (left) actual ship (right) VR modeled ship
Fig. 5 Ship VR environment
Fig. 6 VR On the Job Training
Fig. 7 VR Based Fire Fighting Dril
The use of VR technology has been rapidly spreading for training relating to vessels and equipment. KR is now developing training for seafarers and inspectors to help them understand the ISM Convention, and will continue to develop and improve the system by constantly tracking the results of training effects and any improvement requirements.