Semaphore practice status

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Build a semaphore practice round

Practice sender-oriented A–Z flag poses. Each answer includes the correct letter and a source-backed review note.

The A–Z set excludes numerals, special signals, and operating procedure.
Visual recognition does not practice sending, receiving procedure, or mirrored receiver views.
Choose a short drill or cover all 26 letter poses once.
Keep the seed to replay the same questions and option order.
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Review media unavailable. Your recorded answer remains scored.

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Review the semaphore signals to practice next

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Missed answer review

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Pose-family performance

See which clock-face pose circles were secure and which need another practice pass.

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Answer ledger

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Maritime Signal Flags Quiz Practice all 26 ICS letter flags and ten numeral pennants with repeatable rounds, immediate feedback, and missed-signal replay.
Morse Code Quiz Practice visual International Morse letters and digits in seeded rounds with immediate corrections, pattern totals, and missed-symbol replay.
Braille Alphabet Quiz Practice visual recognition of uncontracted Braille letters and literary digits with seeded rounds, instant feedback, and missed-item replay.
Country Flags Quiz Practice 194 country flags in seeded world, regional, ASEAN, EU, or Commonwealth rounds with flexible feedback and missed-flag review.

Flag semaphore turns the position of two outstretched arms into letters that can be read at a distance. The flags make the arms easier to see, but their colours do not identify the letter. Meaning comes from the pair of directions formed by the sender's left and right arms.

A useful way to learn the alphabet is as a set of circles around the body. Within many of these families, one arm stays at a reference direction while the other moves through several clock-face positions. This pattern reduces memorisation, yet it also creates close neighbours that are easy to confuse when a pose is read too quickly.

Sender orientation
Left and right belong to the person making the signal. A mirrored receiver view can therefore resemble a different letter.
Cross-body pose
One arm crosses the torso, placing both flags on the same side. These compact shapes need a deliberate left-versus-right check.
Pose family
A group of letters that shares a fixed arm direction while the other arm advances around the clock face.

Visual recognition practice is useful for reading individual alphabet poses, especially before a signalling lesson or as a short memory drill. It does not teach how to send smoothly, establish contact, space words, correct errors, or use numeric and operating signals. A correct short round is evidence about that round, not proof of practical signalling ability.

How to Use This Tool:

Choose the size of the recognition drill, then use the feedback to study the arm positions rather than memorising answer locations.

  1. Choose Semaphore Letters (A-Z), Recognition, and a question count of 5, 10, 15, 20, or 26. A 26-question round covers every included letter once.
  2. Set a Replay seed only when you want a reproducible round. The same set, count, and seed reproduce both question order and answer order.
  3. Start the round and select one of the four letters for each sender-oriented pose. Read the explanation before advancing, especially after a mirrored or cross-body mistake.
  4. Review the score, missed-answer notes, and Pose-family performance. Retry missed letters for focused practice or use a new seed for a fresh selection.

Interpreting Results:

The score is the number of correct letter choices out of the questions answered in the completed round. The pose-family bars show where the misses occurred, which is more useful for study than the total alone.

  • Repeated misses within one circle suggest that the shared fixed-arm direction needs review.
  • A perfect short round covers only its sampled letters. Use a 26-question round or another seed before drawing a broader conclusion.
  • If a prompt image cannot load, that item is blocked before scoring. Change the setup or start a new session rather than guessing from an unavailable pose.

Technical Details:

Semaphore letters are ordered pairs of arm directions. The reference below uses the sender's left hand (LH) and right hand (RH); “across” means that an arm crosses the body. This orientation must stay fixed when comparing diagrams or repeated quiz attempts.

Letter Position Map:

Circle Letters and sender-oriented positions
1A: LH down, RH low; B: LH down, RH out; C: LH down, RH high; D: LH down, RH up; E: LH high, RH down; F: LH out, RH down; G: LH low, RH down.
2H: LH across low, RH out; I: LH across low, RH up; K: LH up, RH low; L: LH high, RH low; M: LH out, RH low; N: LH low, RH low.
3O: LH across high, RH out; P: LH up, RH out; Q: LH high, RH out; R: LH out, RH out; S: LH low, RH out.
4T: LH up, RH high; U: LH high, RH high; Y: LH out, RH high.
5J: LH out, RH up; V: LH low, RH up.
6W: LH out, RH across high; X: LH low, RH across high.
7Z: LH out, RH across low.

Formula Core:

Each correct answer earns one point and each incorrect answer earns zero. Accuracy is the correct count divided by the question count, expressed as a percentage.

Accuracy = CorrectAnswersQuestionCount × 100 %

A result of 17 correct answers from 20 questions gives 85%. The displayed score remains 17/20, while the family totals retain the exact correct and missed counts.

Rule Core:

Rule Exact behavior
CoverageThe bank contains all 26 Latin alphabet poses. Numerals, special signals, and operating procedure are excluded.
SelectionQuestions are selected without replacement, so a letter appears at most once in an ordinary round.
ChoicesEach prompt contains the correct letter and three distinct distractors. A stable seed controls both question and choice order.
FeedbackEvery answer reveals the correct letter and a pose-specific explanation before the next question.
Media failureAn unavailable prompt image blocks the unanswered item. An image that fails after an answer was recorded does not change that score.
ReplaySame-seed replay repeats the challenge; new-seed replay changes it; missed replay contains the missed items from the completed round.

References: