blue water

Open ocean expanse

Blue water refers to the open ocean, far from coastlines and shallow seas.

The term appears most often in naval contexts: a blue-water navy can project power across oceans, unlike coastal defense forces limited to home waters.

The phrase distinguishes deep-sea operations from brown water (rivers and coastal areas) and green water (continental shelves).

Related

maritime · pelagic · sailing · island hopping · marlin · sea · offshore · billfish · nautical · navy · fishing charter · Crater Lake · depths · aquamarine · tropical waters · high seas · deep-sea fishing · vast

Categories
Opposites
naval/maritime operational range

blue watergreen water

Algae-tinted aquatic environment

littoral · coastal · riverine · inshore · nearshore

water depth/location

blue watershallow water

Low-depth aquatic area

coastal waters · nearshore · inland waters · lagoon · tidal waters

water color/clarity

blue watermurky water

Unclear, sediment-filled liquid

muddy water · green water

Family

blue, water, aquatic, dehydrate, wateriness, hydrated, blueness, blueish, rehydrate

Familiarity
Top 200,000
Profile
Known to kids · Used worldwide · Timeless · Concrete · Positive · Everyday, not technical · Rated G