A number of Satellite VDES MAC protocols are provided. The Satellite VDES MAC protocol provides a significant improvement in the overall throughput in the satellite communication system. In one aspect, a method, a computer readable medium, and an apparatus for wireless communication are provided. The apparatus may determine a geographical location of a terrestrial vessel. The apparatus may determine a subset of time slots in a frame of an uplink communication channel based on the geographical location. The apparatus may select at least one candidate time slot from the subset of time slots. The apparatus may transmit a message using the at least one candidate time slot.

An accurate predictive methodology for crude oil markets. Use of both technology and domain expertise to build a robust predictor of crude oil cargo (and its derivatives) loading. The method relies on a plurality data sources to verify the accuracy of the data. AIS for locating a vessel and machine learning are employed for prediction. In some cases, crude oils are traded using a synonym. Synonyms have been accounted for in this method wherever available via an extensive commodity hierarchy taxonomy. The method provides benchmarking information on basis the port calls, SOFs (statements of facts) and ullage Reports to select the best berth for a commodity. The system and method provide for improved berth selection and facilitate quality improvements in cargo management systems. The method improves the currently available business intelligence related to cargo at berth and improves quality of information or shipping executives, managers, charterers and traders.

A vessel including a hull, an upper deck, an accommodation structure extending above the upper deck, a propulsion system powered by ammonia as a fuel, and a tank for storing ammonia for supplying the propulsion system, wherein the tank is located aft of the accommodation structure.