| RADIOBEACON | Once aboard, I activated transmitter used for navigation (5,6) |
| JAMMER | A transmitter used for jamming signals (6) |
| CUBICCENTIMETRE | Bent copper, crime etc: I activated measure (5,10) |
| INUNDATE | With sister aboard, I determine the time of flood (8) |
| CALLALARM | Small radio transmitter used by the elderly to summon help (4,5) |
| UPLINK | Country accepting place in transmitter used to communicate with satellite (6) |
| POSES | The attitudes of Edgar Allan once aboard (5) |
| ECHOSOUNDER | City house with greater security for navigation device |
| NORTH | Pole, or ___, Star, used for navigation. |
| MAP | Paper reference that's used for navigation |
| ASTROLABE | Old instrument used for navigation |
| POLESTAR | Heavenly body used for navigation (4,4) |
| CANAL | Artificial watercourse used for navigation (5) |
| DECKHOUSE | A cabin on the top level of a boat or ship used for navigation or accommodation (9) |
| GPS | Tech used for navigation |
| ROADMAP | Used damp oar, as it's useful for navigation (4,3) |
| SPAR | Iceland -; type of crystal used by the Vikings to find the direction of the sun as an aid for navigation (4) |
| POLARIS | Situated where the projection of the Earth's axis or the NCP lies, the current North Star, used to determine latitude and formerly by sailors for navigation (7) |
| LEYS | According to Alfred Watkins, tracks developed by prehistoric man for navigation or for connecting ancient sites, later believed to be mystical lines of "earth energy" (4) |
| RUDDER | Runs around dude with aid for navigation |
