Having spent 10 years sailing as an officer on-board a chemical ship here on the east coast, most US flag ships will answer you as they are well manned and understand English well. Most foreign flag ships have crews that do not speak English well and do not like to talk on the radio. Trust me I have had my fair share of trying to reach other ships. One time I called another ship to find out what their intentions were and was told by the person answering the radio that he was only the cook and needed to wake the mate, so please stand by. WTF This is why it is in your best interest to stay clear of any commercial traffic, remember that the bridge of the ship is often greater than 100 feet off the surface of the water and if they don't see anything they are just going right back to sleep. It is not easy to see that 42 ft. tuna boat from that height unless they are on top of you.Somewhat off topic but can anyone explain why big ships never answer vhf calls unless there name is specifically called?