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Revalidating an Unclassed DP Offshore Certificate

Requirements for Revalidating 

An Unclassed Dynamic Positioning certificate can be revalidated providing you meet the NI requirements:

 DP Sea Time Days

 The applicant should note that this time can be completed on an unclassed vessel or with a mixture of classed and unclassed DP sea time. In the instance of revalidation, the certificate will remain an Unclassed DP certificate

 You must meet one of the following criteria:

 a) If more than 150 days DP sea service is done within a period of 5 years, then the person needs to re-send the documents to the Institute to receive a certificate with a new validity date.

 b) If the DPO has less than 150 days of DP sea service within the preceding 5 years, then the person needs to do a Simulator course and a minimum of 30 days DP sea service.

 c) If no DP sea service was obtained within the period of the last 5 years, then the person would have to undertake a Simulator course and do a minimum of 60 days DP sea time on a DP vessel to have his/her license revalidated.

 d) If no DP sea time days were obtained within the preceding 5 years, then the person would need to complete a DP Revalidation Course (see note).

 e) If the DP professional has been engaged in an occupation The Nautical Institute considers as being equivalent to the sea service (i.e. DP lecturer/instructor, DP surveyor, DP consultant, DP auditor, DP superintendent, DP supervisor), revalidation of his/her DP certificate will require a minimum of 150 days in the activity claimed within the preceding 5 years.

 NOTE: The Revalidation Course may be completed up to six months before the revalidation date set by the NI. The course will be valid for a period of 12 months only, during which the DPO must send in an application to the NI.  If the participant is completing the course for the first time, there is no minimum DP sea time requirement. If the participant is completing the course for a second or subsequent time, a minimum of 28 DP sea time days will be required to revalidate.  This DP time may be completed prior to or after the Revalidation Course.  Where a participant subsequently revalidates using 150 DP sea time days only, after having taken the Revalidation Course for their first renewal, that participant can then take the Revalidation Course again without a DP sea time requirement.

 The entries to prove the DP occupation (e) shall be made in an NI or IMCA logbook and signed by the accredited training centre (in the case of a DP lecturer), the vessel’s Operations Manager (in the case of a DP superintendent, DP consultant or DP supervisor) where the work/activity was performed, or by The Nautical Institute’s authorised person (in the case of a DP auditor).

 All DP sea time to be used for revalidation must be logged in your NI logbook or IMCA logbook, and the time signed off by the master.

 If you decide to apply with a mix of experience that involves criterion (a) and criterion (e), then the sea time obtained during the last 5 years shall be counted towards the required cumulative 150 days. Example: 15 days as a DP lecturer and 15 days DP sea service totalling (the minimum) 30 days.

 If you are a Master holding a DP certificate, you can claim for DP sea time due to your direct responsibility for and supervision of the DP operations. In this case, the DP sea time shall be recorded in the NI or IMCA logbook, signed and stamped as the DP Master.


a) Passive DP sea time will not be accepted for revalidation purposes as it can only be counted for initial training in the task section of the logbook.

b) Position Mooring or THRUSTER-ASSISTED MOORING (TAM): The time on board a vessel with the classification of POSITION MOORING or THRUSTER-ASSISTED MOORING (TAM) and DP Class notation can be counted as DP sea time for initial DP training. The NI requires the candidate to present evidence that the anchor was not deployed for the DP sea time claimed during DP operations when applying for a DP certificate.

Confirmation Letters 

For revalidation applications, company letters confirming the DP sea time days must be provided for any time completed after 1st January 2014. The definition of a DP sea time day for revalidation applications changed on 1st January 2015. Any time completed before this time is classed as a minimum of one hour per day on DP watch. After 1st January 2015, the minimum time became two hours on DP watch in order for the day to be counted.  The required DP sea time days must follow the definitions above. 

Application for Revalidation

Once the above requirements have been completed, you will need to apply online for the revalidation of the Unclassed Limited/Unlimited Dynamic Positioning Certificate. As you are revalidating, an account will already be held on The Nautical Institute database from when your original certificate was issued (even if you did not apply online) and this account must be used. If you do not know your login details please first try the ‘Forgot password’ option on the login page. If the system confirms that no email address is linked to the account please use the ‘Validate DPO’ option to set up your login details for the account already held on our system. Please do not open a new account.

 Once logged in on the NI website, you should update any personal details which may have changed. Depending on which of the a–e requirements were met (shown above in the Requirements for Revalidating), you will need to complete all the details necessary on the online application form. Once the information has been entered, the application should be submitted online to check if you are eligible. The payment option will only be available if you meet the revalidation requirements and, once the payment has been completed, the application should be sent in to The Nautical Institute offices for processing.

 Documents to be sent to the Nautical Institute offices are:

  • Copy of passport personal details page
  • Copy of STCW certificate held
  • Original NI logbook
  • Original IMCA logbook (if applicable)
  • Original DP Revalidation logbook (if applicable)
  • Original DP Certificate
  • Confirmation letters for all DP sea time and/or DP activity time
  • Additional documents where necessary

 Once documents are received by The Nautical Institute, an automatic email will be generated and sent to your registered email address with an indemnity letter containing a QR code, which can be used onboard of DP vessels during the period of 3 months. This letter shall be accepted by the charterers onboard as temporary DP certificate license, and will confirm that your logbooks and documents are being verified by the NI team.

 Please note that all applications are subject to verification once they are received by The Nautical Institute.




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  1. Jenny Daintree

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