Other considerations to think about
are that with ham radio you are limited to non-commercial / non-business uses. You are not supposed to do banking, check on rental property, buy things or sell things etc. on the ham bands. Commercial marine SSB does allow for these uses but generally the services charge some fee and your boat must be licensed with the FCC for this purpose. Email is possible using either service but you will need a radio interface (called a terminal node controller or tnc) which is a type of modem to connect it to a computer. Ham radio services are all free (see arrl.org). There are also some amateur satellite services available. Commercial SSB email is $200 per year for Sail Mail (sailmail.com) more for some other services like Globe Wireless. All things considered, it is probably better to get a commercial marine SSB which can also be used for the ham frequencies. You can get a ham radio which can be modified to transmit on the commercial marine frequencies but to do so is technically illegal except in an emergency. Most radios can receive all of the hf frequencies for weather fax and message services with a tnc and computer.Boat modifications usually include a ground system and an automatic tuner. If you are technically competant, you might consider using a manual tuner. You can look at the SGC web site for some ideas about the installation (sgcworld.com) or Icom, SEA, Furuno, etc. may have sites also. You will probably need to insulate your backstay. Insulators are expensive. I used Stay-loc brand insulators which can be installed by most competant sailors using ordinary tools. Stay-loc makes a variety of adapters (study a catalog and shop carefully to save money) which allow you to attach an eye or fork directly to the insulator and that saves money and reduces the number of connections you have to make using rigging wire. You should fill the connection to reduce corrosion. I used wax in mine since it can be melted out for later inspection or re-use. Brion Toss has a rigging web site for advice on rigging topics (briontoss.com I think). Grounding is a big topic. Generally, you can tie all of the big metal items (engine, metal tanks, etc.) in the boat hull together with copper ground strap and use that for the ground of the radio system. You can also use metal thru hulls as well depending on your particular boat. You should consider electrolysis and bonding in doing this. There are differences of opinion about this so just know that in advance. If necessary, you can use copper screen against the hull to increase the coupling area and tie that into the ground as well. Finally, you may need to add filters and battery and or alternator capacity to the system. You may notice interference problems if the transmitter couples to the other boat systems. My friends boat has a problem with the autopilot steering off course when he transmits. You probably should learn about ferrite beads if you have these kinds of problems. They are clip on devices which reduce interference problems from device wiring.