"reserve buoyancy" meaning in English

{
  "forms": [
    {
      "form": "reserve buoyancies",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "~"
      },
      "expansion": "reserve buoyancy (countable and uncountable, plural reserve buoyancies)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
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          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Nautical",
          "orig": "en:Nautical",
          "parents": [
            "Transport",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Physics",
          "orig": "en:Physics",
          "parents": [
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "1984, Tom Clancy, “The Eighth Day: Friday, 10 December”, in The Hunt for Red October, Annapolis, Maryland: Naval Institute Press, →ISBN, pages 194–195:",
          "text": "In the engine room, the changing angle dropped the melted core to the deck. The hot mass attacked the steel deck first, burning through that, then the titanium of the hull. Five seconds later the engine room was vented to the sea. The Politovskiy's largest compartment filled rapidly with water. This destroyed what little reserve buoyancy the ship had, and the acute down-angle returned. The Alfa began her last dive.",
          "type": "quote"
        }
      ],
      "glosses": [
        "The ability of a ship, boat, or other vessel to stay afloat even if loaded with additional weight; the additional buoyancy of a vessel above and beyond that required to just float the vessel itself."
      ],
      "id": "en-reserve_buoyancy-en-noun-VGRtjKET",
      "links": [
        [
          "nautical",
          "nautical"
        ],
        [
          "physics",
          "physics"
        ],
        [
          "ability",
          "ability"
        ],
        [
          "ship",
          "ship"
        ],
        [
          "boat",
          "boat"
        ],
        [
          "vessel",
          "vessel"
        ],
        [
          "stay",
          "stay"
        ],
        [
          "afloat",
          "afloat"
        ],
        [
          "load",
          "load"
        ],
        [
          "additional",
          "additional"
        ],
        [
          "weight",
          "weight"
        ],
        [
          "buoyancy",
          "buoyancy"
        ],
        [
          "float",
          "float"
        ]
      ],
      "raw_glosses": [
        "(nautical, physics) The ability of a ship, boat, or other vessel to stay afloat even if loaded with additional weight; the additional buoyancy of a vessel above and beyond that required to just float the vessel itself."
      ],
      "tags": [
        "countable",
        "uncountable"
      ],
      "topics": [
        "natural-sciences",
        "nautical",
        "physical-sciences",
        "physics",
        "transport"
      ],
      "wikipedia": [
        "reserve buoyancy"
      ]
    }
  ],
  "word": "reserve buoyancy"
}

{
  "forms": [
    {
      "form": "reserve buoyancies",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "~"
      },
      "expansion": "reserve buoyancy (countable and uncountable, plural reserve buoyancies)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with quotations",
        "English uncountable nouns",
        "Pages with 1 entry",
        "Pages with entries",
        "en:Nautical",
        "en:Physics"
      ],
      "examples": [
        {
          "ref": "1984, Tom Clancy, “The Eighth Day: Friday, 10 December”, in The Hunt for Red October, Annapolis, Maryland: Naval Institute Press, →ISBN, pages 194–195:",
          "text": "In the engine room, the changing angle dropped the melted core to the deck. The hot mass attacked the steel deck first, burning through that, then the titanium of the hull. Five seconds later the engine room was vented to the sea. The Politovskiy's largest compartment filled rapidly with water. This destroyed what little reserve buoyancy the ship had, and the acute down-angle returned. The Alfa began her last dive.",
          "type": "quote"
        }
      ],
      "glosses": [
        "The ability of a ship, boat, or other vessel to stay afloat even if loaded with additional weight; the additional buoyancy of a vessel above and beyond that required to just float the vessel itself."
      ],
      "links": [
        [
          "nautical",
          "nautical"
        ],
        [
          "physics",
          "physics"
        ],
        [
          "ability",
          "ability"
        ],
        [
          "ship",
          "ship"
        ],
        [
          "boat",
          "boat"
        ],
        [
          "vessel",
          "vessel"
        ],
        [
          "stay",
          "stay"
        ],
        [
          "afloat",
          "afloat"
        ],
        [
          "load",
          "load"
        ],
        [
          "additional",
          "additional"
        ],
        [
          "weight",
          "weight"
        ],
        [
          "buoyancy",
          "buoyancy"
        ],
        [
          "float",
          "float"
        ]
      ],
      "raw_glosses": [
        "(nautical, physics) The ability of a ship, boat, or other vessel to stay afloat even if loaded with additional weight; the additional buoyancy of a vessel above and beyond that required to just float the vessel itself."
      ],
      "tags": [
        "countable",
        "uncountable"
      ],
      "topics": [
        "natural-sciences",
        "nautical",
        "physical-sciences",
        "physics",
        "transport"
      ],
      "wikipedia": [
        "reserve buoyancy"
      ]
    }
  ],
  "word": "reserve buoyancy"
}