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| 51. | approach navigation |
| 进场导航|进港导航 |
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| 52. | Decca navigation |
| 台卡导航 |
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| 53. | borehole navigation |
| 井眼导向 |
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| 54. | space navigation |
| 宇宙导航 |
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| 55. | ocean navigation |
| 远洋航行 |
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| 56. | sonar navigation |
| 声波导航 |
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| 57. | offshore navigation |
| 近海航行 |
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| 58. | tramp navigation |
| 不定期航行 |
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| 59. | astro navigation |
| 宇宙航行 |
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| 60. | polar navigation |
| 极区航行 |
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