- Introduction: When Leisure Turns into Tragedy
- Accident Overview: A Tragic Collision Between Friends
- Legal Requirements for Operating Personal Watercraft in Japan
- “It Didn’t Require a License Abroad” Is Not a Valid Excuse
- Rising Foreign National Accidents and Regulatory Tightening
- Actions Foreign Residents and Employers Should Take
- Impact on Visa and Residency Status
- Toward a Cohesive Multicultural Society
- Conclusion: For Safe and Prosperous Lives
Introduction: When Leisure Turns into Tragedy
On August 16, 2026, at approximately 2:20 PM, a collision between two personal watercraft (jet skis) occurred at Lake Yamanaka in Yamanashi Prefecture. A 36-year-old Chinese national suffered severe head injuries, including subdural hematoma. According to the Fujiyoshida Police Station, the individual is suspected of operating the watercraft without the required Special Small Vessel License and is currently under investigation for unlicensed operation.
Personal watercraft are popular summer recreational vehicles. However, this incident serves as a stark reminder that these enjoyable vehicles can cause serious accidents in an instant. For foreign residents in Japan and for managers and HR personnel at companies employing foreign nationals, this accident highlights a critical lesson about the importance of understanding and complying with Japanese laws and regulations.
Accident Overview: A Tragic Collision Between Friends
On the day of the accident, a group of six people visited Lake Yamanaka for recreation. Two personal watercraft, operated by acquaintances, were traveling side by side when they collided, throwing both operators into the water. The watercraft involved belonged to one of the group members.
At first glance, this may appear to be a “common accident.” However, the underlying issues likely include a lack of understanding of Japanese law and a mistaken assumption that “if I could ride it abroad, it should be fine in Japan.”
Legal Requirements for Operating Personal Watercraft in Japan
1. Special Small Vessel License is Mandatory
In Japan, operating a personal watercraft (jet ski, marine jet, etc.) requires a “Special Small Vessel License” (Tokushu Kogata Senpaku Menkyo). Operating without this license can result in a fine of up to 300,000 yen.
According to the Japan Marine Recreation Association, license courses are currently available only in English or Portuguese. Portuguese courses are offered at only one location—a boat license school in Gunma Prefecture. Furthermore, in the Kanto region, applications for personal watercraft licenses in foreign languages have not been accepted for some time.
This means that unless you are proficient in Japanese or English, obtaining a license is extremely difficult.
2. Advance Registration Required at Lake Yamanaka
Under Yamanashi Prefecture ordinances, anyone operating a motorized vessel on the Fuji Five Lakes (excluding Lake Saiko and Lake Motosu) must submit a “Vessel Notification” (Senpaku Todoke) in advance. This notification includes details such as vessel type, model, engine output, and noise prevention measures.
Vessel owners who operate motorized vessels without submitting this notification face fines of up to 200,000 yen. Additionally, failure to display the “Vessel Registration Sticker” on the vessel can result in a fine of up to 50,000 yen for the owner.
3. Strict Owner Liability
A particularly important point is that vessel owners face severe penalties.
According to Article 690 of the Commercial Code, “the owner is liable for damages caused to others by the crew members in the performance of their duties, regardless of whether there was negligence in the selection or supervision of those crew members.”
Specifically:
- An unlicensed operator faces a fine of up to 300,000 yen
- The vessel owner faces imprisonment of up to six months or a fine of up to 1,000,000 yen
Note that the penalties for the owner are more severe than those for the operator. This clearly demonstrates the legal concept of “owner management responsibility.”
“It Didn’t Require a License Abroad” Is Not a Valid Excuse
I have personally operated personal watercraft in countries where no license is required. The sense of speed and exhilaration is incredible. Since there is no risk of falling over, it seemed simpler and safer to operate than a motorcycle. The ease of operation can create an illusion of safety. However, personal watercraft can reach speeds exceeding 80 km/h and pose risks of collisions with swimmers and other vessels.
Licensing systems vary significantly by country.
Some countries allow operation of scooters, mopeds, and electric scooters without licenses or registration. However, not all countries have the same rules.
Rising Foreign National Accidents and Regulatory Tightening
Current Situation with Motor Vehicle Accidents
According to National Police Agency statistics, there were 587 fatal or serious injury accidents involving foreign drivers in 2025. Foreign drivers accounted for 2.3% of all accidents.
In response, the examination process for converting foreign driver’s licenses to Japanese licenses (Gaikoku Menkyo Kirikae) was made more stringent in October 2024.
Need for Review of Personal Watercraft Licensing
Similar to automobiles, there is a growing recognition that the licensing system for personal watercraft (Special Small Vessel License) may need reform to better accommodate foreign nationals.
Currently, foreign-language course availability is extremely limited, making it difficult for non-Japanese speakers to obtain licenses. This situation may inadvertently encourage unlicensed operation.
Actions Foreign Residents and Employers Should Take
For Foreign Residents in Japan
- Pre-Operation Checklist
- Does operating this vehicle require a license or permit?
- Will my insurance cover me in case of an accident?
- Are there any special local regulations?
- “It Was Fine in My Home Country” Does Not Apply
Japan has its own legal system. Actions that were permissible in your home country or other nations may be illegal in Japan. - Never Operate Without a License or Insurance
What begins as recreational fun can become a serious crime. Not only you, but also the owner who lent you the vehicle may face severe penalties.
For Employers of Foreign Nationals
- Legal Compliance Education During Onboarding
Provide opportunities to explain not only employment regulations but also Japanese traffic rules and lifestyle-related laws. - Regular Safety Awareness Campaigns
Conduct reminders before leisure seasons, such as before summer vacations. - Establish a Consultation Desk
Create an environment where employees can easily ask, “Is this legal in Japan?” to prevent violations before they occur. - Insurance Verification
Confirm the coverage of employees’ insurance policies and encourage review of coverage as needed. - Accident Response Protocols
Clearly define procedures for responding to accidents should they occur.
Impact on Visa and Residency Status
Legal violations can affect visa and residency status renewal or change applications.
Particularly:
- Fines for unlicensed operation
- Penalties for ordinance violations
- Criminal penalties for serious accidents
These can affect “good conduct requirements” and risk denial of residency status renewal.
Do not take “minor violations” lightly. Adherence to all laws and regulations is the foundation for stable life in Japan.
Toward a Cohesive Multicultural Society
Understanding and adhering to societal rules is the first step toward building a cohesive society.
As Japan’s foreign resident population grows, efforts to create a society where people can live safely together despite differences in culture and language require:
- Eliminating “I Didn’t Know”
Efforts must be made to bridge information gaps caused by language and cultural differences. - Multilingual Information Provision
Government agencies and companies are called upon to provide legal information in more languages. - Mutual Understanding and Respect
Japanese citizens should also understand the challenges faced by foreign residents and offer support. - Preventive Approach
Rather than responding after accidents or violations occur, emphasis should be placed on education and awareness in advance.
Conclusion: For Safe and Prosperous Lives
The Lake Yamanaka personal watercraft accident is not merely an “unfortunate leisure accident.” It is a case that potentially involves a serious legal violation rooted in a lack of understanding of Japanese law—one that cannot be excused by “I didn’t know.”
We urge foreign residents in Japan and companies employing foreign nationals:
✅ Always verify license and permit requirements before operating any vehicle
✅ Confirm your insurance coverage in advance
✅ Never operate without a license or insurance
✅ Make it a habit to learn and follow societal rules
Our office provides support not only for visa and residency status applications but also for general consultation regarding life in Japan. If you have questions such as “Is this legal in Japan?” or “What procedures are required?”, please do not hesitate to contact us.
We are committed to supporting you so that leisure remains enjoyable and safe, and so that you can live and work in Japan with peace of mind.
Source Article:
https://news.yahoo.co.jp/articles/edc78d9b73af83255cea40d250fe6400767075d1
This article is based on information as of September 1, 2026. Laws and regulations are subject to change, so please always verify the latest information with official agencies.
