How can I contact my family on the boat?

Mobile phones can be used, but generally there is no signal for more than ten nautical miles offshore or on inhabited islands, and the signal near the seaport of big cities can be transmitted further. There are other ways to communicate. At present, the satellite phone on board basically allows the crew to make personal calls. If the professional radio station is used well, you can use the radio station to call the shore station and answer the home phone. Other shipping companies are also allowed to send e-mails online using satellites on board, use ip calling cards in foreign ports or roam on domestic mobile phones. China Mobile and China Unicom can play in almost any coastal country. Shortwave radio is the best tool for sailors to understand the world. You can listen to the radio on the bridge without buying it yourself, but non-duty personnel on strictly managed ships are not allowed to get on the bridge, let alone listen to the radio.