Hello and thank you for posting.
Twinmotion Boats Pack 1 does not contain any skeletal meshes but you can create a skeleton in your favorite 3D modeling program.
As stated by Ninjin, you will have to export the static meshes and perform the rigging and skinning in your preferred 3D modeling program.
If you wish to purchase assets that fit your needs, the Marketplace may have a product that will better suit your needs.
I hope this assists you in your next steps.