In the development of marine tourism, two kinds of impacts on the environment will emerge, positive and negative. The positive impacts include: (1) increasing accessibility and economic activities (2) increasing amenities, and (3) creating attractions. The negative impacts include: (1) pollution of the environment, change the quality of the environment. (2) change the original shape of the Marine tourism area, and (3) social impacts. When the development concepts have been realized and managed optimally, it will automatically have a major impact on improving the community’s economy in a sustainable manner in the future, which will open up large enough jobs. On the outside the region, the community can feel the positive impact of the development of tourism and economic improvement, because the community can also take the opportunity to try in the fields related to the development of marine tourism around the area. Conversely, it could only receive bad consequences from the development of marine tourism. It can be concluded, that there will be sustainable development if there is a balance between infrastructure development and human resource development. This research is part of a case study on the initial concept of structuring the Gampong Krueng Raya coastal area, Sabang City, NAD, from the socio-economic aspect. This research uses descriptive qualitative and interpretative methods. Data and information obtained by literature study and field observations.

A Petroleum Refinery Plant is located in the tsunami prone area at the southern coast of Central Java, Indonesia. The potential mega thrust earthquake, along subduction zone of southern coast of Java, has been identified to have moment magnitude as maximum as Mw = 8.7. The worst scenario due to this earthquake will potentially generate 5.3m to 8.6m tsunami height along the coast within 30 minutes and will inundate one to two kilometres inland of the refinery complex. In this regard, a comprehensive investigation on potential tsunami hazard, level of vulnerability, and tsunami risk potential were carried out. The investigation includes collection and analysis data of detailed topography, bathymetry, land covering and land use, availability of protective structure as well as disaster contingency plan, field ground check data verification, awareness questionnaire, etc. The investigation output includes numerical tsunami inundation simulation, tsunami hazard index, vulnerability index, capacity index, and tsunami risk index for all area of refinery unit. It is concluded that: 1) the main location of refinery complex with considerable numbers of tanks is vulnerable to high tsunami hazard index, and 2) the capacity index in all area are mostly between low to mid-level.