Along with money changing, the purchase os a SIM card is the most used service at the Mission once seafarers arrived.Communication has always been part of the Mission's services: with technology developing the service has changed from letters posting and receiving to installing phones then computers with internet connection to selling SIM cards from the 2000s, aiding seafarers to communicate with their family. go talk, mobile phone, sim card, australia, ship, seafarers, sailors, seamen, international calls, communication, welfare