Although it is not always visible, there is a very well equipped Seafarers Mission for crew in Boston. This is right on the pier as you exit the ship. They offer phone card sales, internet telephone service, internet access, food/supplies store, Moneygram and money order services, free Bibles in many languages, and a small chapel for reflection. The pastor there is an excellent resource and advocate for crew. Worth a look if you are coming to Boston.