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Maritime Signal Flags

International maritime signal flags are used worldwide as a standard means of communication either between two vessels or a vessel and shore.

Product Description

All of our maritime signal flags are hand sewn, using premium quality materials specifically chosen for their durability, making them very well suited for flying at sea.

Our maritime signal flag set is made up of 40 nautical flags, including;

  • 26 Alphabet Flags
  • 3 Substitute pennants
  • 10 Numeral Pennants
  • 1 Code/Answer Pennant

Please contact our team for induvial flag / pennant purchase or partial sets.

Maritime Signal Flags Sizing

All of our signal flags are made to order and available to purchase online in 9 different sizes, ranging from 8” to 72.” Our flags are made ready to fly, with headband, rope and toggle as standard - other options available. 


Letters (cm)


Subs (cm)


Numbers (cm)


Size 1

20 x 15

23 x 15

35 x7 x2

Size 2

30 x 23

46 x 25

61 x 15 x 5

Size 3

38 x 30

53 x 35

71 x 20 x 5

Size 4

46 x 30

60 x 46

81 x 25 x 5

Size 5

53 x 46

76 x 50

114 x 38 x 8

Size 6

76 x 50

107 x 76

152 x 46 x 10

Size 7

91 x 61

107 x 76

152 x 46 x 10

Size 8

122 x 91

137 x 91

213 x 61 x 12

Size 9

183 x 122

213 x 152

305 x 91 x 20

Bespoke Maritime Signal Flags

Should you have any bespoke sizing or design requirements, our skilled team of designers can work with you to ensure you get the perfect solution for your vessel. Please contact our team of flag experts for more information.

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Frequently Asked Questions

What sizes of maritime signal flags do you sell?

Our flags are available in 9 different sizes;

  • 8"
  • 12"
  • 15"
  • 18"
  • 21"
  • 30"
  • 36"
  • 48"
  • 72"

Should you require a different size, please contact our experts today to discuss your requirements.

How many signal flags are in a set?

There are 40 flags/pennants within a full set of maritime signal flags, which can be added to your basket on this page and purchased online. Should you require individual flags or partial sets, please contact us today

When will I receive my order of maritime signal flags?

All of our signal and code flags are made to order, we would normally expect to deliver within 5 working days of your order. 

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