Brunswick Corporation. MX 535 Transponder -- with all three linked to a junction box. Hemisphere GPS division. carriage requirements, according to standards established by the IMO. half-meter long, together with CSI's MBL-3 beacon antenna. Marine for some time. Trinity Solution. Hemisphere GPS has been producing for MX since 2003. customers include the U.S. Coast Guard. Hemisphere GPS President Rick Heiniger. be called the next wave in navigation," said MX Marine President Greg Konig. corrections. global customer base that includes both the U.S. and Canadian Coast Guards. multipath-resistant antennas in a single enclosure a half meter long. unexpected DGPS signal outages. multipath-resistant antennas in two separate enclosures. accuracy. being much more affordable.