I have been thinking further about your question. I see you may be travelling with young children. Nao Victoria is all outdoors, along the Magellan Straight, so I strongly recommend that for your family. They can climb all over the ships, get fresh air etc. We took a cab ( about 10-12 min ride) and had the driver wait for us an hour+. I think this would be most appropriate for your group. I also saw many families in the Salesian Museum which you could walk to. Maybe go to NV first with a cab, have him bring you back to Salesian M on the return to save time? But do check the hours at Salesian bec I think they close for a fairly long lunch break.