The iPad version with the gps is the version that has the SIM card. However, you don't need a SIM card and don't need to use data as it will use the built in gps position for chart plotting.

Warren S/V Scuba Doo
Lagoon 50 (winner of best crewed yacht under 55 feet at the St. Thomas crewed yacht boat show).

https://www.cyabrochure.com/ebn/2307/pdyrX/6642/4///