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International Code of Signals (N-Z)

Maritime Signal Flags

See also:

International Code of Signals (Overview)
International Code of Signals (A-M)
International Code of Signals (Numeric)
International Code of Signals (Miscellaneous)

Unless otherwise noted, all imaged drawn by Antonio Martins

Individually, each flag has a specific meaning. Below are the meanings from the 1951 Admiralty Manual of Seamanship and the newer meanings from the 1969 RYA Flags and Signals complied by David Prothero

ICS Letter N (November)

November; No (Negative): became, No (Negative or 'The significance of the previous group should be read in the negative').

ICS Letter O (Oscar)

ICS Letter P (Papa)

Papa; In harbour the same. At sea, Your lights are out or burning badly: became, when used by fishing vessels to mean, 'My nets have come fast upon an obstruction'.

ICS Letter Q (Quebec)

ICS Letter R (Romeo)

Romeo; The way is off my ship - you may feel your way past me. (No current meaning available)

ICS Letter S (Sierra}

Sierra; My engines are going full speed astern: became, My engines are going astern.

ICS Letter T (Tango)

Tango; Do not pass ahead of me: became, Keep clear of me; I am engaged in pair trawling.

ICS Letter U (Uniform)

Uniform; You are standing into danger: became, You are running into danger.

ICS Letter V (Victor)

ICS Letter W (Whiskey)

ICS Letter X (X-Ray)

ICS Letter Y (Yankee)

Yankee; I am carrying mails: became, I am dragging my anchor.

ICS Letter Z (Zulu)

Zulu; To be used to address or call shore stations: became, I require a tug. or, when made by fishing vessels operating in close proximity on the fishing grounds it means, 'I am shooting nets'.