Note From the Chairman of the Technical Committee テクニカル委員長からのお知らせ

From the Chairman of the Technical Committee to Sailors Participating in the "2022 Hansa Class Asia Pacific Championships & Para World Sailing Championships Hansa Class in Hiroshima"

I am writing to share something with all of you who are planning to participate in the "2022 Hansa Class Asia Pacific Championships & Para World Sailing Championships Hansa Class in Hiroshima" next month.

I would like to inform you of the results of the boat measurements at the "Hansa Class World & International Championships 2018" held in Hiroshima, and give you a "Note to participants of the 2022 championships".

Boats used in sailing competitions are measured according to the class rules. This is to ensure fair competition under the same conditions. You can find each class rules at the following website:

International Hansa Class Association→ Technical →

(see each class rules)

I will describe some examples of cases "not meeting class rules" that I noticed at the "Hansa Class World & International Championships 2018 " so that you can see for yourself before participating in the 2022 Championships.

If a spar or sail is not in accordance with the established dimensions, it is difficult to correct it on site, so please adjust it locally and then bring it to Hiroshima.

1) Hull weight

The hulls are all manufactured in one factory in Indonesia, so there is no problem with length and other dimensions. However, some of the older hulls were below the regulation weight. This is because FRP hulls continue to dry out and become a little lighter, albeit slightly.

I believe your harbor has a scale for weighing boats.

If the weight is lighter than the regulation weight, a fixed adjustable weight must be attached. The adjustable weight must be firmly attached so that it cannot be removed.

Hull weight includes the rudder case but not a bowline, paddle, or bailer.

2) Keel and Rudder

You do not need to measure and weigh the keel and rudder if they are not damaged.

3) Spar

Specifically, regarding the mast length, some were either too long or too short, compared to the specified size. Please note that the length (including the cap at the tip) has only 10 mm allowance for each class. If the mast is too long, it can be cut off at the site, but the plastic cap at the tip will break, so spares will be needed. If the mast is too short, there is no way to correct it.

In addition, some Hansa 303 foremasts were too long. However, this can be corrected by repositioning the drum for the reef.

4) Sail

Some of the old sails had extended luffs and leeches that exceeded the dimensions of the rules.

We do not plan to have the sail maker bring in a sewing machine to repair it at the Hiroshima Championships. Please measure your sail in advance and make any necessary adjustments.

In addition, the country codes and sail numbers should be at least 175 mm height of the letters specified in the class rules. Please measure it in advance and consult with the local sail makers, etc., to make the necessary adjustment.

Sail measurement points are shown in the pdf files below.


If modifications are required, prior permission must be obtained from the International Hansa Class Association.


If you have any questions about the class rules, please contact the Chairman of the Technical Committee, Tetsutaro Muramatsu.

e-mail : 

Tetsutaro Muramatsu, Chief Measurer of Japan Hansa Class Association

『ハンザ アジアパシフィック選手権 2022、







International Hansa Class Association → Technical → 各クラスのルール















Hansa 303 のフォアマストに長過ぎたものがありましたが、リーフ用のドラムの位置を付け替えることによって修正できます。









クラス規則に関する質問は、以下のメールアドレスにてお受け致します。 【ハンザクラス 計測委員長 村松哲太郎】