(1)开放海
未封闭的海，或指其海岸上没有山峡或要隘的海洋部分，相对于为狭窄的陆岬〔headland〕、海角〔promontory〕所包围或封闭的海洋部分。

(2)公海

• net balance
• net book agreement
• net capital stock
• net cash
• net cash flow
• net cash ten days
• net earnings
• net estate
• nether house
• nether house of parliament
• net income
• net interest
• net issues
• net lease
• net listing
• net national product
• net-net-net lease
• net operating income
• net operating loss
• net operating loss carry over
• net premium
• net price
• net proceeds
• net proceeds of sale
• net profit