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

Civil and merchant ensigns

Notes

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

Naval ensigns

Jacks

Yacht ensigns

Distinguishing marks

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

House flags ca. 1900

Coastwise emblem

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