"brown water" meaning in English

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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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        {
          "kind": "topical",
          "langcode": "en",
          "name": "Nautical",
          "orig": "en:Nautical",
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            "Transport",
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            "Fundamental"
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      "examples": [
        {
          "ref": "2007, Atish Sinha, Madhup Mohta, Indian Foreign Policy: Challenges and Opportunities, page 953:",
          "text": "[…] brown-water ships and this is the factor that leads to the mismatch between ideas and practice. The other parameters of a blue - water force are better.",
          "type": "quote"
        },
        {
          "ref": "2011, Committee on Blue Water Navy Vietnam Veterans and Agent Orange Exposure, Institute of Medicine, Blue Water Navy Vietnam Veterans and Agent Orange Exposure",
          "text": "[…] ships … that served … primarily or exclusively in inland waterways, … categorized as brown-water ships or [personnel] who served on such ships before or after the designated period of brown water activity are not eligible …"
        }
      ],
      "glosses": [
        "Inland (river) or coastal waters, in contrast to blue water."
      ],
      "id": "en-brown_water-en-noun-Rn5eMKmm",
      "links": [
        [
          "nautical",
          "nautical"
        ],
        [
          "river",
          "river"
        ],
        [
          "blue water",
          "blue water"
        ]
      ],
      "raw_glosses": [
        "(nautical, often attributive) Inland (river) or coastal waters, in contrast to blue water."
      ],
      "tags": [
        "attributive",
        "often",
        "uncountable"
      ],
      "topics": [
        "nautical",
        "transport"
      ]
    }
  ],
  "word": "brown water"
}

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  "lang_code": "en",
  "pos": "noun",
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        "en:Nautical"
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        {
          "ref": "2007, Atish Sinha, Madhup Mohta, Indian Foreign Policy: Challenges and Opportunities, page 953:",
          "text": "[…] brown-water ships and this is the factor that leads to the mismatch between ideas and practice. The other parameters of a blue - water force are better.",
          "type": "quote"
        },
        {
          "ref": "2011, Committee on Blue Water Navy Vietnam Veterans and Agent Orange Exposure, Institute of Medicine, Blue Water Navy Vietnam Veterans and Agent Orange Exposure",
          "text": "[…] ships … that served … primarily or exclusively in inland waterways, … categorized as brown-water ships or [personnel] who served on such ships before or after the designated period of brown water activity are not eligible …"
        }
      ],
      "glosses": [
        "Inland (river) or coastal waters, in contrast to blue water."
      ],
      "links": [
        [
          "nautical",
          "nautical"
        ],
        [
          "river",
          "river"
        ],
        [
          "blue water",
          "blue water"
        ]
      ],
      "raw_glosses": [
        "(nautical, often attributive) Inland (river) or coastal waters, in contrast to blue water."
      ],
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        "attributive",
        "often",
        "uncountable"
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      "topics": [
        "nautical",
        "transport"
      ]
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  "word": "brown water"
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