Maritime flags

flag designated for use on ships or at sea
English: This is a gallery of maritime flags — flags designated for use at sea.

Notes

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1.^ Civil ensign is identical to the national flag.
2.^ Design is the same as the national flag, but the proportions are different.

State ensigns

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Jacks

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Yacht ensigns

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Distinguishing marks

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Flown by United States Government ships subordinate to these services to distinguish them from ships subordinate to the United States Navy, with which they share a common ensign.

House flags

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  House flags ca. 1900

Coastwise emblem

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Used by ships which engages in coastwise trade, or transport of passenger or goods between two local ports, in the Philippines.