I want to make satellite phone calls, especially maritime satellite phone calls, that is, on board ocean-going ships. Seaman's phone number?

I know that there is an international calling card that can make maritime satellite calls, that is, the number starting with 00870. You can use handheld terminal equipment on your mobile phone or landline without making international calls or buying expensive maritime satellite phones. The phone bill is also very cost-effective, with a minimum of 10 yuan per minute. Compared with paying 5000 yuan in the business hall, it is more convenient and cost-effective. You can find international calling cards by searching Baidu or Taobao. Good luck.