Eurail Select Pass discounts for train/boat travel

We are planning a 3-day stay covering Lucerne & Interlaken. I would like to know if these below listed train journeys are free with Eurail select pass?

Train ride from Lucerne -> Engelberg

Train ride from Engelberg -> Lucerne

Train ride from Lucerne -> Interlaken

Boat ride from Hergizwil -> Lucerne

Thanks.

Hi rambs, thanks for joining us!

Yes, the trips you've listed are for free with a Eurail Select Pass. This validity section provides more information.