. manually suppressed D. done again\r335> Navigational and meteorological warnings, meteorological\rforecasts and other urgent safety related messages to shipping,.\rincluding electronic chart correction date i s . 67293:\r:338\rA. Safety Service B. Urgent Service\rC. Distress Alerting D. MSI\r336> The navigational warning of the WWNWS i n c l u d e s 67294:\r:339\rA. NAVAREA Warnings B. meteorological\rWarnings\rC. Distress alerts and urgent information D. Tsunami\rWarnings\r337> How many types of GMDSS radio beacons in use nowadays?\r67154::340\rA. 3 B. 4 C. 2 D. 5