Class B

Seapilot_Compact_GNSS_Compass_cPanbo-thumb-465xauto-12245
Panbo

Seapilot Vector Compact GNSS Compass, Sweet Deal That Usually Works Well (BLOG)

I don't know why Seapilot is selling the Compact at half price -- and all its Class B AIS transponders, too -- but maybe it's because many boaters don't yet realize how much a GPS (GNSS) compass like this can do.