A UK flagged vessel should fly the Red Ensign during daylight. It must be worn when entering a foreign port. They are not worn while racing. The ensign should be flown from the stern of the vessel.

Please note 'Printed' flags are still a physical material flag, its just the image imprinted onto the material rather then our 'Sewn' flags which have the pattern stitched on.

The size of the flag should look appropriate for the boat. An approximate guide often used is 1 inch per foot of vessel or follow the guide below:

Approx sizing, a guideline, not exact

1/2 Yard	45cm x 23cm
3/4 Yard	68cm x 34cm
1 Yard	91cm x 45cm
1 & 1/4 Yard	114cm x 56cm
1 & 1/2 Yard	137cm x 68cm
2 Yard	183cm x 91cm
6' x 4'	183cm x 122cm
2 & 1/2 Yard	229cm x 114cm
3 yard	274cm x 137cm