On which voyage would a great circle track provide a significant savings in distance to steam, when compared to a rhumb line track? (Use gnomonic tracking chart WOXZC 5270.)

Correct Answer: Option A — Guam (LAT 14°00'N, LONG 145°00'E) to Seattle via LAT 47°30'N, LONG 125°30'W

In accordance with Bowditch, great circle tracks yield maximum distance savings on high-latitude transoceanic voyages with substantial differences in longitude. The high-latitude arc from Guam to Seattle via 47°30'N provides significantly greater distance reduction compared to near-equatorial or short coastal runs.