Telegraph Harbour - - - Montague Harbour
20.5 nautical miles via N side Thetis Is.
15.3 nautical miles via Houstoun Passage
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Thetis Island Marina, Telegraph Harbour
Montague Harbour Marina, Galiano Island
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| Distance = | 20.5 NM |
| Speed Knots | Time HR:MIN |
| 6.5 | 3:09 |
| 7.0 | 2:56 |
| 7.5 | 2:44 |
| 8.0 | 2:34 |
| 8.5 | 2:25 |
| 9.0 | 2:17 |
| 9.5 | 2:09 |
| 10.0 | 2:03 |
| 10.5 | 1:57 |
| 11.0 | 1:52 |
| 11.5 | 1:47 |
| 12.0 | 1:43 |
| 12.5 | 1:38 |
| 13.0 | 1:35 |
| 13.5 | 1:31 |
| 14.0 | 1:28 |
| 14.5 | 1:25 |
| 15.0 | 1:22 |
| 15.5 | 1:19 |
| 16.0 | 1:17 |
| 16.5 | 1:15 |
| 17.0 | 1:12 |
| 17.5 | 1:10 |
| 18.0 | 1:08 |
| 18.5 | 1:06 |
| 19.0 | 1:05 |
| 19.5 | 1:03 |
| 20.0 | 1:01 |
| 20.5 | 1:00 |
| 21.0 | 0:59 |
|
| Distance = | 15.3 NM |
| Speed Knots | Time HR:MIN |
| 6.5 | 2:21 |
| 7.0 | 2:11 |
| 7.5 | 2:02 |
| 8.0 | 1:55 |
| 8.5 | 1:48 |
| 9.0 | 1:42 |
| 9.5 | 1:37 |
| 10.0 | 1:32 |
| 10.5 | 1:27 |
| 11.0 | 1:23 |
| 11.5 | 1:20 |
| 12.0 | 1:17 |
| 12.5 | 1:13 |
| 13.0 | 1:11 |
| 13.5 | 1:08 |
| 14.0 | 1:06 |
| 14.5 | 1:03 |
| 15.0 | 1:01 |
| 15.5 | 0:59 |
| 16.0 | 0:57 |
| 16.5 | 0:56 |
| 17.0 | 0:54 |
| 17.5 | 0:52 |
| 18.0 | 0:51 |
| 18.5 | 0:50 |
| 19.0 | 0:48 |
| 19.5 | 0:47 |
| 20.0 | 0:46 |
| 20.5 | 0:45 |
| 21.0 | 0:44 |
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