The following is a copy of the official Disqualification reasons, codes. We have created some videos showing the mistake and another on how it should be done. A big thanks to Savina for being our educational swimmer.
| Code | Explanation | Video of D/Q | Video of Correction |
| START | |||
| 2.3.2 | Delaying the start | ||
| 4.4 | Starting before the starting signal | ||
| FREESTYLE | |||
| 5.2 | Did not touch wall at the turn or finish |  |
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| 5.3 | Totally submerged (except for first 15m at start and turn) during the race | |
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| Head did not break surface at or before 15m mark following start or turn | |
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| BACKSTROKE | |||
| 6.1 | Both hands not holding starting grips or standing in or on the gutter or bending the toes over the lip of the gutter or top of the touchpad or feet not in contact with the wall or touchpad face. | |
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| 6.2 | Left position on back (other than to initiate a turn) | |
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| 6.3 | Totally submerged, (except for first 15m following the start or turn) during the race or at the finish | |
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| 6.4 | Did not touch the wall during the turn | |
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| More than one single or double simultaneous arm pull used to initiate the turn or not performed immediately | |
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| Not on back when leaving wall | |
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| 6.5 | Not on the back at finish | |
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| BREASTSTROKE | |||
| 7.1 | After the start or after each turn, single butterfly kick performed other than before the first breaststroke leg kick | |
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| Head not breaking surface before hands turn inward at widest point in second stroke after start or turn | |
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| 7.2 | Body not on the breast during the swim or when leaving the wall after a turn (except when executing a turn) | |
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| Stroke cycle not one arm stroke to one leg kick excluding the last single arm stroke prior to the touch at the turn or finish | |
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| Arm movements not simultaneous or not in the same horizontal plane | |
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| 7.3 |
Hands not pushed forward together from the breast on, under or over the water | |
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| Elbows over water except for last stroke before the turn, during the turn or the final stroke at the finish | |
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| Hands not brought back on or under the surface of the water | |
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| Hands brought back beyond the hip line (except after the first stroke following the start or turn) | |
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| 7.4 | Head not breaking surface during each complete cycle | |
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| Leg movements not simultaneous (alternating leg movement) or leg movements not on the same plane | |
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| 7.5 | Feet not turned out during the propulsive part of the kick | |
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| Executed alternating or downward butterfly kicks (except after the start or after the turn, as in SW 7.1) | |
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| 7.6 | Did not touch at turn or finish with both hands or touch not simultaneous or hands not separated | |
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| Head not breaking surface during the last complete or incomplete cycle preceding the touch | |
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| BUTTERFLY | |||
| 8.1 | Body not on the breast during the swim or when leaving the wall after a turn (except when executing a turn) | |
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| 8.2 | Arms not brought forward simultaneously or arms not brought forward over the water | |
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| Arms not brought backward under the water simultaneously throughout the race (subject to SW 8.5) | |
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| 8.3 | Movements of the legs not simultaneous or alternating movement of legs or feet | |
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| Breaststroke kick used (legal in Masters Competitions) | |
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| 8.4 | Did not touch at turn or finish with both hands or touch not simultaneous or hands not separated | |
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| 8.5 | More than one arm pull under water (following start or turn) | |
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| Head did not break surface at or before 15m mark following start or turn or not on surface during stroke | |
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| MEDLEY | |||
| 9.1 | Incorrect individual stroke order i.e.not Fly, Back, Breast, Free | ||
| Each stroke did not cover ¼ of race distance | |||
| 9.2 | Body not returned to breast during freestyle leg before kick or stroke performed | |
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| 9.3 | Incorrect medley relay stroke order i.e. not Back, Breast, Fly, Free | ||
| Each stroke did not cover ¼ of race distance | |||
| 9.4 | Finish of each stroke not in accordance with rules for the particular stroke | |
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| THE RACE & RELAYS | |||
| 10.2 | A swimmer did not cover the whole distance - DNF | ||
| 10.3 | Swimmer did not remain and/or finish in the lane in which they started | ||
| 10.4 | No contact with the wall during a turn or turn not made from the wall or took stride or step from bottom of the pool | |
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| 10.5 | Walks during freestyle events or during the freestyle portion of the medley | |
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| 10.6 | Pulled on the lane rope | |
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| 10.7 | Obstruction or interfering with another swimmer - foul | |
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| 10.8 | Unauthorised use of tape, device or swimsuit aiding speed, buoyancy or endurance, power bands or adhesive substances used | ||
| 10.9 | Swimmer enters water during an event in which they are not scheduled to swim | ||
| 10.10 | Fewer than four in a relay team or team not (2 x men, 2 x women) or team members not registered with same club (MSW 4.1) | ||
| 10.11 | Swimmer's feet lost touch with starting platform before preceding team-mate touches | |
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| 10.12 | Team member enters water during race not to swim their length | ||
| 10.13 | Team event swum in incorrect order to that previously nominated | ||
| 10.14 | Obstructing another swimmer or team when leaving the pool following completion of a race or relay leg | |
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| 10.15 | Pacemaking, plan or device or instruction given | ||
