SIGNAL FLAGS

Victor, Whiskey, X-ray, Yankee and Zulu: Signal Flags and Meanings

Victor, Whiskey, X-ray, Yankee and Zulu seal the letter flags with assistance, medical assistance, a prompt, a towing anchor and tug requirements. Zulu also has a special fishing significance. The five signs thus do not convey a general mood, but different messages, the wording and context of which are crucial for a clear assignment.

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Flag illustration for V–Z Signal Flags: Meanings and Context
V–Z Signal Flags: Meanings and Context · supplied learning collection

Key facts and distinctions

Article focus
International Code of Signals
Learning distinction
Sign, message and context are separate
Victor
V; help is needed
Whiskey
W; medical assistance is required
X-ray
X; stopping projects and listening to signals
Yankee
Y; own anchor towing over ground
Zulu in general
Z. Tugboat is required
Zulu in the special fisheries context
Nets are suspended
Victor pattern
Red diagonal cross on white
X-ray pattern
Blue upright cross on white
Yankee model
Diagonal yellow-red stripes

Victor and Whiskey: Name Help Differently

Victor is white and wears a red diagonal cross. The single signal V means that help is required. On a blue background, whiskey shows a white square with a red square in its center. W requests medical help. Both flags concern aid, but whiskey explicitly mentions the medical species. This specification should also be preserved in a short German declaration.

Whiskey does not contain a diagnosis, treatment recommendation or the number of people affected. Such information does not belong to the individual flag. Likewise, Victor is not identical to every conceivable emergency group. The signal book knows different set statements for different situations. Flag knowledge here describes its meaning; a single sign is neither a complete report nor a substitute for the relevant practical training.

X-ray and Yankee: prompting or own situation

X-ray shows a blue upright cross on a white background. The individual signal X requests the counterpart to cancel his project and to pay attention to the signals of the transmitter. Both parts belong together. The message is therefore more detailed than a mere stop. It refers to a project and the subsequent attention to further signals without specifying a new route.

Yankee has diagonal yellow and red stripes. Y reports that your own anchor is dragging over the ground. This is a concrete statement about the position of the ship and its anchor. The flag alone does not indicate the basic nature, wind strength or the cause. For learning, X can therefore be compared as a request addressed to the receiver and Y as a self-report.

Zulu: suspending tug needs and nets

Zulu is divided into four triangles of yellow, blue, red and black. Z generally means that a tractor is required. Fishing vessels working in close proximity to each other on fishing grounds shall have a different individual meaning: nets shall be released. This restriction corresponds to the explicitly contextual exception for Golf, which reports the catching up of the nets there. Without the fisheries context, the translation would be incomplete or misleading.

In regattas, individual patterns of this group can have further sporting tasks. For example, the race rules use Yankee in connection with personal lift equipment and X-ray for a single recall. These are not additional meanings within the general single flag code explained here. A comparison of the systems makes sense if the source and the connection remain visible. A mixed list of meanings without labelling would easily lead to incorrect answers, especially with these known patterns.

Details Worth Remembering

Whiskey remains a requirement

Whiskey indicates the need for medical help. The flag thus indicates what kind of support is sought. It contains no medical findings and no instructions for treatment; such additional statements cannot be derived from W.

X-ray contains two related parts

Cancel the project and observe the other signals together form the message X. It is precisely the second part that distinguishes this request from any short form stop and connects it to the further communication context.

Zulu and Golf as a network pair

In the specifically described fishing case, Zulu reports the launching and Gulf reports the retrieval of nets. In the general code, however, the same letters denote tractor requirements and pilot requirements. The couple shows particularly clearly why a question must state its context.

The illustrated signs and variants

V · Victor
V · VictorI require assistance.
W · Whiskey
W · WhiskeyI require medical assistance.
X · X-ray
X · X-rayStop carrying out your intentions and watch for my signals.
Y · Yankee
Y · YankeeMy anchor is dragging.
Z · Zulu
Z · ZuluI require a tug.

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A QUICK CHECK

What did you discover?

Which flag requires medical attention?

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What Does Yankee Mean in General ICS Single Flag Code?

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What does Zulu mean for nearby fishing vessels on fishing grounds?

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Recognise V · Victor →Practise signal meanings →Recognise W · Whiskey →Practise signal meanings →Recognise X · X-ray →Practise signal meanings →Recognise Y · Yankee →Practise signal meanings →Recognise Z · Zulu →Practise signal meanings →

Sources and image credits

This English article draws on the institutional sources listed below. Figures and memberships retain their stated reference dates.

Source record: 2 November 2026. A translation does not change the reference date of a figure or membership list.

  1. govinfo.gov/content/pkg/GOVPUB-D5_300-PURL-LPS73101/pdf/GOVPUB-D5_300-PURL-LPS73101.pdf
  2. imo-epublications.org/content/books/9789280117387
  3. oceanservice.noaa.gov/education/dyw-blue-peter.html
  4. media.sailing.org/sailing/wp-content/uploads/2025/07/29083752/2025-2028-RRS-with-Changes-and-Corrections.pdf

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