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MS(R) 21A, Application for the Registration of a Ship under the (Malta) Merchant Shipping Act, 1973, page 1
Moderate · 57/100Form Complexity Index

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What this form asks for

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Form MS(R) 21A is the legal document required to apply for the registration of a vessel with the Malta Ship Registry. It collects detailed information about the ship, including its general characteristics, dimensions, ownership, and management, which is essential for establishing its legal status under the Maltese flag. Completing this multi-section form accurately is crucial for a successful registration process. Today, this form can be filled out quickly and accurately using AI-powered services like Instafill.ai, which can also convert non-fillable PDF versions into interactive fillable forms.
Fillable fields52
Pages1
Sections21
Form Complexity IndexModerate, 57/100

The AI checks your answers before you download

13 checks built for this form, so a wrong date or a missing answer is caught before anyone else sees it.

Validates IMO Number Format and Check Digit

This check verifies that the IMO Number, if provided, follows the standard format of 'IMO' followed by seven digits. It should also validate the seventh digit, which is a check digit calculated from the preceding six. This is crucial for ensuring the vessel's unique and correct identification in global maritime databases. A submission with an invalidly formatted IMO number would be rejected or flagged for mandatory correction.

Ensures Proposed Date of Registry is Not in the Past

This validation confirms that the 'Proposed date of registry' is on or after the date of the application submission. A ship registration is a prospective action, so a date in the past is a logical impossibility and indicates a data entry error. This check prevents processing logically flawed applications. If the date is in the past, the system should return an error and require the user to enter a valid future date.

Verifies Engine Year is Consistent with Ship Build Year

This check compares the ship's build year ('When Built', Item 24) with the engine's manufacturing year ('Year of Make', Item 27). The engine's year should not be significantly older than the ship's build year, and neither year can be in the future. This logical cross-check helps identify potential data entry errors or unusual configurations that might require further scrutiny. A significant discrepancy would trigger a warning prompting the user to confirm the dates are correct.

Requires Completeness of Owner Identification

This validation ensures that the owner's full name (Item 31) and a corresponding identification number (either 'Passport No.' for an individual or 'Partnership No.' for a body corporate, Item 32) are both provided. Verifiable owner identity is a fundamental legal requirement for ship registration to establish clear ownership and accountability. An application missing either the name or an ID number is incomplete and must be rejected until the information is supplied.

Validates Engine Details Based on Propulsion Type

This rule checks for a logical dependency between the 'Propulsion' type (Item 2) and the completion of the 'Propelling Engines' section (Items 25-30). If propulsion is 'Motor' or 'Steam', then fields like 'Number of Engines' and 'Horsepower' must be filled with valid data. This prevents the submission of incomplete technical specifications for powered vessels. If the fields are empty for a powered vessel, the submission would be blocked.

Ensures Tonnage and Dimension Fields are Positive Numbers

This check validates that all fields in Section B, such as 'Gross Tonnage', 'Net Tonnage', 'Length', 'Breadth', and 'Depth', contain only positive numerical values. These physical characteristics of the vessel cannot be zero or negative. This validation is essential for preventing data entry errors and ensuring the technical data is physically plausible and usable for regulatory calculations. Any non-positive or non-numeric entry would result in a validation failure.

And 7 more checks
  • Verifies Completeness of Declaration, Signature, and Date
  • Validates Email Address Format for Manager and Agents
  • Validates Conditional Requirement for Previous Malta Registration Details
  • Requires Completeness of Builder and Build Year Information
  • Ensures Proposed Ship Name is Provided
  • Validates Service Type is Specified
  • Validates Numeric Format for Crew Accommodation

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How to Fill Out MS(R) 21A Online for Free in 2026

What the AI walks you through.

  1. Navigate to Instafill.ai and upload or select the MS(R) 21A form.
  2. Use the AI assistant to automatically populate general ship details such as the proposed name, IMO number, propulsion, and service type.
  3. Provide specific technical data in the prompted fields, including tonnage, register dimensions, and hull description.
  4. Enter detailed information about the ship's propelling engines, including the number of engines, make, year, and horsepower.
  5. Input the owner's and ship manager's details, including names, addresses, contact information, and identification numbers.
  6. Review all the AI-populated information for accuracy, complete the final declaration, and make any necessary edits.
  7. Electronically sign the application and download the completed MS(R) 21A form, ready for submission to the Maltese authorities.

Common Mistakes in Completing MS(R) 21A

The ones the AI is built to catch.

Using Incorrect Power Units for Engine Horsepower
Field 29 explicitly requires engine power in kilowatts (kW), but applicants often enter the value in Brake Horsepower (BHP) or another common unit without conversion. This leads to incorrect technical data on the official registry, which can cause issues with certification, insurance, and port state control inspections. To avoid this, always use a standard conversion formula (1 HP ≈ 0.7457 kW) to calculate the correct kilowatt value before entry. AI-powered tools like Instafill.ai can automatically detect and convert units to match form requirements, preventing this error.
Providing an Incomplete or Incorrect Legal Owner Name
For corporate owners, applicants frequently enter a common trading name or an abbreviation instead of the full, official legal entity name as required by note (b) for field 31. This mistake can create significant legal and administrative delays, as the ownership details on the application must exactly match the company's registration documents. Always use the complete legal name, including suffixes like 'Ltd.', 'Inc.', or 'GmbH', as it appears on the certificate of incorporation. This ensures a smooth verification process.
Failing to Delete Inapplicable Declaration Clauses
The declaration in item 39 contains clauses with the instruction '(c) Delete whichever is inapplicable'. Applicants often forget to strike through the clause that does not apply, leaving the declaration ambiguous regarding the vessel's radio equipment or its transfer consent status. This ambiguity can halt the registration process until a clarification is provided. When filling out the form, carefully review each clause and physically cross out the one that is not true for your vessel. If using a digital tool, ensure it supports annotations or provides a clear way to indicate the correct choice.
Confusing Individual and Corporate Identification Numbers
Field 32 asks for a 'Passport No.' for an individual owner and a 'Partnership No.' for a body corporate. A common error is entering a personal passport number for a corporate application or a company registration number for an individual owner. This mismatch between owner type and ID number will cause the application to be rejected during verification. Double-check that you are entering the correct identifier in the corresponding field based on whether the owner is a person or a legal entity.
Forgetting to Provide Alternative Ship Names
The form requests a proposed name in field 1, and note (a) explicitly asks for alternative names in order of preference. Many applicants only provide their first choice, overlooking the request for backups. If the primary name is already taken or not permissible, the absence of alternatives forces the registry to halt the process and contact the applicant, causing unnecessary delays. To avoid this, always research name availability and provide at least two alternative names.
Entering Incorrect Units for Vessel Dimensions
Fields 12, 13, and 14 clearly specify that the ship's length, breadth, and depth must be provided in metres. However, applicants accustomed to imperial measurements often enter these dimensions in feet or feet and inches. This fundamental data entry error results in a grossly inaccurate vessel profile and immediate rejection of the application. Always ensure all measurements are converted to metres before filling out Section B. Smart form-filling tools can help by validating that the entered numbers are reasonable for the vessel type and flagging potential unit errors.
Omitting the 'Description' of the Signatory
In the signature section, below the signature and date, the form asks for the 'Name and Description' of the owner or agent. Applicants often just print their name again, omitting the 'Description' part. This field is crucial for establishing the signatory's authority (e.g., 'Director', 'Authorised Agent', 'Owner'). Without this description, the legal validity of the signature may be questioned, potentially invalidating the application. Always include your job title or capacity to demonstrate you are authorized to sign on behalf of the owner.
Misinterpreting 'Certified Accommodation' for Crew
Field 9 asks for the number of seamen for whom accommodation is 'certified', which refers to the official capacity stated on the ship's safety or accommodation certificate. A frequent mistake is to enter the current number of crew members on board or the planned crew size, which may differ from the certified maximum. This can lead to compliance discrepancies with maritime labor conventions. To prevent this, refer directly to the vessel's official certification documents to find the correct certified accommodation number.
Providing Incomplete Builder or Maker Addresses
Fields 23 (Builders) and 30 (Makers) require a full name and address. Applicants often provide an incomplete address, missing the city, postal code, or, most importantly, the country. For an international registry, a complete address is essential for proper identification and record-keeping. An incomplete address can slow down verification checks. Always provide the full, unabbreviated postal address for both the shipbuilder and the engine maker. Since this form is a non-fillable PDF, tools like Instafill.ai can convert it into an interactive format and use its database to help auto-complete addresses accurately.
Confusing the Ship's Manager with Manager's Agents
The form distinctly asks for details of the 'Ship's Manager (ISM Code)' in field 35 and 'Ship's Manager Agents' in field 37. Applicants sometimes confuse these roles, providing the same information for both or only filling out one section. The ISM Manager is a specific legal entity responsible for the ship's safety management, while an agent may handle commercial or port operations. Failing to distinguish between them can lead to incorrect contact information being registered for critical safety and operational matters. Ensure you provide the correct details for each distinct role.

Frequently Asked Questions About MS(R) 21A

 

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This plan is for your MS(R) 21A: your own AI agent fills it as often as 5 times a month. To fill other forms and upload your own, choose a Professional plan from your account.
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How does the AI fill out MS(R) 21A?
You answer a few questions in plain words, or upload your driver's license. The AI reads what you give it and puts each answer into the right field of MS(R) 21A, on every page, in seconds. It checks the answers against the form's own rules, and you review and change anything before you download, print or sign.
What happens to my information?
It is encrypted in transit and at rest, and it is never used to train AI.
How complex is MS(R) 21A to fill out?
MS(R) 21A has a Form Complexity Index of 57 out of 100, in the moderate tier: 52 fillable fields across 1 page. Instafill.ai's AI fills it in under a minute, with every field there for you to review before you download.
What is the purpose of the MS(R) 21A form?
This form is the official application used to register a ship under the Maltese flag, in accordance with the Merchant Shipping Act of 1973. It gathers essential details about the vessel, its ownership, and technical specifications for the Maltese maritime authorities.
Who needs to fill out this ship registration application?
The application must be completed and signed by the legal owner of the ship. Alternatively, a duly authorized agent acting on the owner's behalf can complete and submit the form.
Why do I need to provide alternative names for my ship in Section A?
You should provide alternative names in order of preference in case your first choice is already registered or not authorized by the registry. This helps prevent delays in the registration process.
What documents are required if my ship was previously registered in another country?
You must state the country of last documentation and provide evidence of that government's consent to transfer the vessel to the Maltese Registry. This consent can be submitted with the application or within 30 days of receiving a provisional Certificate of Malta Registry.
Where can I find the tonnage and dimension information for Section B?
The Gross Tonnage, Net Tonnage, Length, Breadth, and Depth figures should be taken directly from the ship's International Tonnage Certificate (ITC 1969), if applicable.
What information is required for the owner in Section E?
You must provide the full name of the owner, their residence or registered office address, and contact details. If the owner is an individual, provide their Passport Number; if it's a company, provide the corporate registration number.
What should I do in the declaration section regarding radio equipment?
In item 39, you must declare whether the vessel is fitted with radio equipment by deleting the part of the sentence that does not apply. This confirms the vessel's radio status for the registry.
Is the IMO Number a mandatory field?
The IMO (International Maritime Organization) Number is required only if one has been assigned to your ship. If your vessel does not have an IMO number, you may leave this field blank.
What is the difference between the 'Ship's Manager' and 'Ship's Manager Agents'?
The Ship's Manager (Item 35) is the company responsible for the ship's operation and ISM Code compliance. The Ship's Manager Agents (Item 37) are the local representatives who may act on behalf of the manager in a specific region or port.
How should I list the engine's horsepower?
In field 29, you must enter the engine's total power output expressed in kilowatts (kW). This information can typically be found in the engine's technical documentation.
Can I use an AI tool to help fill out this application?
Yes, you can use services like Instafill.ai, which leverage AI to accurately auto-fill form fields from your saved data. This can help you complete the application faster and with fewer errors.
How can I fill out the MS(R) 21A form online?
To fill out this form online, you can upload it to a platform like Instafill.ai. The service makes the document interactive, allowing you to type directly into the fields and save your progress digitally.
The PDF copy of this form I have is not fillable. What can I do?
If you have a non-fillable or 'flat' PDF, you can use a service like Instafill.ai to convert it into an interactive, fillable form. Simply upload the document, and the platform will make the fields editable online.
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