Complex sentence: The Sevenstones Lightvessel does not currently measure maximum wave heights, only the significant or more consistent wave patterns-however "maximum wave heights" in any sea state statistically exceed the significant pattern.
Split into simpler sentences: The Sevenstones Lightvessel does not currently measure maximum individual wave heights, only the significant or more'consistent' wave patterns or values. However it is worth noting that "maximum wave heights" in any sea state frequently exceed the significant pattern.