Wärtsilä virtual STW optimised by Eniram
Accurate STW data is a pre-requisite for any decisions related to evaluating vessel performance or speed related onboard operations. According to a study conducted by Eniram, among 300 vessels in 2017, a large portion of vessels (65% of cruise vessels) suffer significantly from speed log quality and performance evaluation accuracy is over or underestimated by more than 5%. This corresponds to speed logs being off by approximately 1,6%.
Rather than using just speed logs as a source of STW, Wärtsilä gathers information about the speed from multiple sources. Combining all of this data leads to an accurate indication of stw, enabled by Wärtsilä Virtual STW.