Broken Switch on Helm of 2004 Rinker 250 Fiesta Vee

Can some identify the missing switch from this panel. I just bought the boat and I'm going through my punch list of things to fix. I'd like to know what this switch controls. Thank you.

Comments
2002 FV 342 on Lake St. Clair - Past Commodore SHC - Vessel Examiner USCGAUX
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