Aim of Judo:

  --To Unbalance the Opponent, and Throw him/her to their back,
    in order to Win the contest.
  --To Hold another on his/her backs, under Control, 
    for a period of 30 secs.
  --To apply an Arm-lock or Strangle to extract a Submission.

Safety Rules:

  1)No "Horse-play" such as Running & Shoving.
  2)No Improper Behavior.
  3)Wear Appropriate Clothing as prescribed by the Instructor.
  4)Don't exercise if being iLL/Injured.
  5)Walk in Do Jang (Training Area) in Bare feet.
  6)No Hard objects such as rings, watches, necklaces & bracelets
    should be Worn. 

Time limit of Contest:

  --3 mins for Junior
  --At least 5 mins for Senior    

Referee Signals [I]:
 
  1)IPPON:
    --Full point (10),
    --Opponent is Thrown Cleanly on the back, with Force,
    --Or held under Control on the Mat for 30 secs,
    --Can be achieved by a cumulative score of 2 WAZA-ARIs.  
  2)WAZA-ARI:
    --Near IPPON (7),
    --1 WAZA-ARA win over Any no. of YUKOs,
    --Throw is not completely successful, without sufficient Force,
    --Or held under Control at least 25 secs,
    --2 WAZA-ARIs make an IPPON [WAZA-ARI-AWASETE-IPPON] (7+7=10 ?).
  3)YUKO:
    --Almost WAZA-ARI (5),
    --1 YUKO Override Any no. of KOKAs, 
    --Throw is partially successful,
    --Or held under Control for 20-25 secs.  
  4)KOKA:
    --Almost YUKO (3),
    --Opponent is thrown with Some force but Not on the back,
    --Or held under Control at least 10 secs.
  5)OSAEKOMI: 
    --Mat hold begins,
    --Opponent is held under Control on his/her back and the time starts. 
  6)MATTE:
    --Match is stopped temporarily,
    --Judokas return to the MIDDLE of the mat,
    --Time Clock Pauses.

Referee Signals [II]:
 
  1)HAJIME:
    --Start
  2)TOKETA:
    --Hold-down broken
  3)SORE-MADE:
    --END of Contest
  4)SONO-MAMA:
    --FREEZE, as the referee wnats a CLOSE-LOOK at a hold-down
  5)YOSHI:
    --Continue after SONO-MAMA
  6)HANTEI:
    --Accompanied by the raising of RED & WHITE flags,
    --call for referees decision on a result.
  7)HIKE-WAKE:
    --referee declares a DRAW,
    --usually heard in PRACTICAL grading Exam.
  8)TORI:
    --the PLAYER executing a TECHNIQUE
  9)UKE:
    --the PLAYER on whom the TECHNIQUE is done

Penalty:
 
  1)Penalize 
    --for NEGATIVE, OVER-defensive judo
    --for PASSIVITY
    --for using ILLEGAL techniques
  2)Types of penalties
    --SHIDO  <----  KOKA against
    --CHUI  <----  YUKO against
    --KEIKOKU  <----  WAZA-ARI against
    --HANSOKU-MAKE  <----  Disqualification

  相關網頁:

     Judo Club in HKUST
     Judo Information Site
     The Dutch Judo Site
     Judo Information Site
     Hong Kong Shau Kei Wan Judo Club 香港筲箕灣青協柔道組