Discuss the role of Virtual Reality (VR) and Augmented Reality (AR) in maritime training and instruction. In which fields of application is VR/AR already used in practice? Discuss frontier applications from Research and Development (R&D). Consider in your response: 1.What are the access hurdles to using the technologies? 2.What are the pros and cons? 3.How does the business case look?; how much does it cost?; how much can be gained (financially)?