| Still surviving on board ship, they may be needed (8) |
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| Navigational instruments which measure the angular distance between celestial objects (8) |
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| Instruments for taking altitude in navigation and surveying |
Irish Times Simplex |
19 Mar 2019 |
| Navigation tools |
The Washington Post |
14 Jul 2017 |
| Navigation tools |
LA Times Daily |
14 Jul 2017 |
| Navigation aids |
Eugene Sheffer |
16 Feb 2017 |
| Navigation tools |
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| Mariners' aids |
New York Times |
27 Nov 2016 |
| Employed by navigators remaining aboard |
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| Mariners' aids |
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| Instruments for taking altitudes in navigation and surveying |
Irish Times Simplex |
09 Oct 2015 |
| Navigational tools that measure the positions of celestial bodies |
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| Navigation tools |
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| Astronomers' instruments |
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| Navigating tools |
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| Navigating tools |
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| Ships' instruments |
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| Astronomical instruments |
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| Navigation aids |
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| Quadrant's relatives |
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| Navigators' instruments. |
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