Exhibit 8.1

Globus Maritime Limited
c/o Globus Shipmanagement Corp.
128 Vouliagmenis Avenue, 3rd Floor
166 74 Glyfada, Greece  

October 2, 2026

Globus Maritime Limited: Exhibit 8.1 Opinion

Ladies and Gentlemen:

We have acted as counsel to Globus Maritime Limited, a Marshall Islands corporation (the “Company”), in connection with the preparation of the Company’s registration statement on Form F-3 (as amended or supplemented from time to time, the “Registration Statement”), as filed with the U.S. Securities and Exchange Commission pursuant to the U.S. Securities Act of 1933, as amended, and the rules and regulations thereunder (the “Securities Act”) on the date hereof, relating to the registration under the Securities Act of the sale from time to time by the selling shareholder named in the Registration Statement of up to 1,328,828 of the Company’s common shares, par value $0.004 per share (“Resale Common Shares”), and related preferred stock purchase rights.

As such counsel, we have examined originals or copies (certified or otherwise identified to our satisfaction) of the following documents:

In such examination, we have assumed (a) the legal competence or capacity of each natural person or entity (other than the Company), (b) the genuineness of all signatures, including electronic signatures, and the authenticity of all documents submitted to us as originals, (c) the conformity to original documents of all documents submitted to us as conformed or photostatic copies, (d) that the documents reviewed by us in connection with the rendering of the opinion set forth herein are true, correct and complete, and (e) the truthfulness of each statement as to all factual matters contained in any document or certificate encompassed within the due diligence review undertaken by us. As to matters of fact material to our opinion that have not been independently established, we have relied upon the representations and certificates of officers or representatives of the Company and of public officials, in each case as we have deemed relevant and appropriate. We have not independently verified the facts so relied on.

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This opinion letter is limited to U.S. federal tax law and Marshall Islands law, and is as of the date hereof. We expressly disclaim any responsibility to advise of any development or circumstance of any kind, including any change of law or fact or the impact of any information, document, certificate, record, statement, representation, covenant, or assumption relied upon herein that becomes incorrect or untrue, that may occur after the date of this opinion letter that might affect the opinion expressed herein.

We have reviewed the discussion set forth in the Annual Report under the heading “Item 10. Additional Information—E. Taxation— United States Federal Income Taxation of United States Holders”. Based on the representations, covenants, assumptions, conditions and qualifications described in such section, and taking into account the fact that the discussions set forth in such section do not purport to discuss all possible U.S. federal income tax consequences of the ownership and disposition of the Resale Common Shares, and subject to the qualifications, limitations and assumptions set forth herein, we confirm that the discussions set forth in such section, to the extent they constitute summaries of law or legal conclusions, unless otherwise noted, constitute our opinion with respect to the material U.S. federal income tax consequences of the ownership and disposition of the Resale Common Shares as of the date of the Registration Statement, and accurately state our views as to the tax matters discussed therein (except for the representations and statements of fact of the Company included under such caption, as to which we express no opinion). We express no opinion as to any U.S. federal income tax consequences other than the opinion set forth above. Except as set forth in the paragraph below concerning Marshall Islands tax consequences, we express no opinion with respect to tax consequences under any state, local, or non-U.S. tax law.

We have reviewed the discussion set forth in the Annual Report under the heading “Item 10. Additional Information—E. Taxation—Marshall Islands Tax Considerations”. Based on the facts as set forth in such section, and having regard to legal considerations which we deem relevant, and subject to the qualifications, limitations and assumptions set forth herein and contained in such discussion, we confirm that the statements in such discussion, to the extent they constitute legal conclusions, unless otherwise noted, are the opinion of Watson Farley & Williams LLP with respect to Marshall Islands tax consequences as of the date of the Registration Statement (except for the representations and statements of fact of the Company included under such caption, as to which we express no opinion).

Our opinions and the tax discussion as set forth in the Registration Statement are based on the current provisions of the Internal Revenue Code of 1986, as amended, the Treasury Regulations promulgated thereunder, published pronouncements of the Internal Revenue Service which may be cited or used as precedents and case law, and the law of the Republic of the Marshall Islands as in effect on the date hereof, any of which may be changed at any time with retroactive effect. This opinion is expressed as of the date hereof, and we are under no obligation to supplement or revise our opinion to reflect any legal developments or factual matters arising subsequent to the date hereof or the impact of any information, document, certificate, record, statement, representation, covenant, or assumption relied upon herein that becomes incorrect or untrue.

We consent to the filing of this opinion as an exhibit to the Registration Statement, the discussion of this opinion in the Registration Statement and the Prospectus, and to the references to our firm in the Registration Statement and the Prospectus. In giving this consent, we do not hereby admit that we are in the category of persons whose consent is required under Section 7 of the Securities Act, or the rules and regulations promulgated thereunder, nor do we admit that we are experts with respect to any part of the Registration Statement within the meaning of the term “expert” as used in the Securities Act.

Very truly yours,

Watson Farley & Williams LLP

/s/ Watson Farley & Williams LLP