If you need to put a leisure craft in the water only to carry out technical checks, the correct procedure is the in-water private trials permit. It is not an authorisation for normal sailing and does not replace final registration: it is intended for specific, limited trials linked to preparing the craft before sale or registration.
It is worth distinguishing it from other permits that are often confused. The Ministry of Transport's electronic office expressly separates it from the temporary navigation permit, precisely to avoid the wrong application being submitted. As with any maritime procedure, documentation, forms and criteria may change, so before filing it is advisable to always check the official office.
What this permit is and what it is for
The in-water private trials permit is designed to allow limited navigation for testing purposes. The idea is not to authorise ordinary nautical activity, but to check technical aspects of the craft, such as stability, freeboard, buoyancy, handling or noise emissions, before commercialisation and registration. According to the Ministry's office, it may be requested by the manufacturer, importer or owner, always within that context of specific trials. [1] [1]
In practice, this means the procedure has a very specific purpose and is not meant to “buy time” while final registration is decided. If the intended use is normal navigation, the relevant flagging and registration regime must be used, not this one-off authorisation. That is why it is important to describe the purpose of the trials clearly and not mix it with other administrative scenarios. [1][5] [1] [5]
- It is for specific technical trials, not ordinary navigation.
- It may be requested by the manufacturer, importer or owner.
- It must relate to trials carried out before commercialisation and registration.
When it applies and when it does not fit
This permit applies when the craft needs to be afloat for a limited period to check its real performance. The official procedure itself links it to private trials, not to the normal operation of the vessel. That difference matters because the Ministry warns that it is sometimes used incorrectly to request authorisations that actually correspond to other administrative titles. [1] [1]
It does not fit, therefore, if what is sought is regular sailing, movements unrelated to trials, or a substitute for registration. Under the general regime, a leisure craft must complete its flagging and registration under the applicable procedure, and the trial authorisation does not replace that obligation. In addition, sixth and seventh list vessels remain the ordinary framework for these craft within the Ship Registration Register. [2][3][5] [2] [3]
- It does not replace final registration.
- It is not a permit for regular navigation.
- It must be used only for specific and limited trials.
What the official form asks for
The official permit form requires, at a minimum, the applicant's details, the craft details and the engine details. It also asks for the planned date or dates of the trials and the place where they will take place. This helps the Administration identify precisely what will be tested, when and where, avoiding generic applications that do not clearly describe the scope of the trial. [4] [4]
As basic documentation, the form includes a copy of a valid DNI, passport or NIF. In addition, the application sheet allows extra documentation to be attached depending on the specific case, if the Administration requires it. In other words, the form sets a minimum core, but it does not prevent more documents from being requested if the technical or administrative situation so advises. [4] [4]
- Applicant details.
- Craft details.
- Engine details.
- Planned trial dates and place of the trials.
How to submit the application to the maritime administration
The application must be submitted to the competent Maritime Authority or maritime district through the relevant official channel. The Ministry's electronic office places this procedure within the recreational craft vessel registration area and connects it with state maritime management. Under the general regime, the registration procedure is also processed before the corresponding maritime district and at the request of the owner or their authorised representative. [1][2] [1] [2]
In electronic processing, the official form also notes a practical point: if files larger than 10 MB are attached, additional documentation may be submitted through the channel provided in the office. The form also states that the time limit begins when the file is received by the authority. This detail should not be taken as a general rule for all procedures, but as guidance from the form itself. [4] [4]
- Submit the application to the competent maritime administration.
- Use the official office channel or the one accepted by the procedure.
- Check file size carefully if you submit documents electronically.
Common mistakes and how to avoid confusion
The most common mistake is confusing this permit with the temporary navigation permit. The ministerial office clarifies this expressly because both procedures are sometimes used interchangeably in applications that should not be mixed. Another frequent error is describing the trial as a general voyage, when in reality it must be justified as a specific and limited technical test. [1] [1]
It is also advisable not to request it as if it were a provisional way of bypassing registration. The regime for the registration and flagging of leisure craft still has its own route, and the general rules of the registry keep the obligation to register craft in order to fly the Spanish flag. For that reason, if the real case is not an in-water trial, the prudent step is to check the correct procedure before submitting the application. [3][5] [3] [5]
- Do not mix it up with the temporary navigation permit.
- Do not use it as a substitute for registration.
- Always describe the technical purpose of the trial.
Frequently asked questions
Who can apply for the in-water private trials permit?
According to the official office, the manufacturer, importer or owner of the craft may apply, provided the purpose is to carry out specific trials before commercialisation and registration.
Does this permit allow normal navigation while the registration is being processed?
No. Its purpose is limited and technical. It is designed for specific in-water trials, not for ordinary navigation or to replace the general registration procedure.
What basic documentation does the official form usually require?
The official form asks for the applicant's details, the craft details and the engine details, as well as the dates and planned place of the trials. As basic documentation, it includes a copy of a valid DNI, passport or NIF.