Global Marine Networks Inc. How to stay in touch with family, friends and information through radio, satellite voice, email and Internet services while at sea with laptops and smartphones is the subject of the GMN offering. Blue water cruisers, and other boaters have more choices than ever when it comes to staying in touch while at sea, but some choices are better than others, according to a new report from Global Marine Networks (GMN), called Staying In Touch Offshore: Global Marine Networks’ Guide To Blue Water Cruising Communications. “The changes we are seeing in communications technologies everywhere are affecting boaters, and particularly those who spend time cruising in blue waters,” said Dr. Luis Soltero, Chief Technology Officer of Global Marine Networks.