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Basis of preparation and going concern uncertainty (Details)			9 Months Ended
	Jun. 17, 2026	Jan. 14, 2026	May 31, 2026 USD ($)	Aug. 31, 2025 USD ($)
Basis of preparation and going concern uncertainty
Cash			$ 814,205
Working capital			6,859,805
Deficit			(83,471,531)	$ (71,581,558)
Issuance of shares and warrants, net of transaction costs paid			$ 11,681,907
Reverse stock split ratio	10	40
Number of reverse stock splits	1	1
7858078 Canada Inc.
Basis of preparation and going concern uncertainty
Proportion of ownership held by the Company			100.00%
NVG Holdings Inc.
Basis of preparation and going concern uncertainty
Proportion of ownership held by the Company			100.00%
Nautical Ventures Group Inc.
Basis of preparation and going concern uncertainty
Proportion of ownership held by the Company			100.00%
Nautical Ventures North LLC
Basis of preparation and going concern uncertainty
Proportion of ownership held by the Company			100.00%
Nautical Ventures Marine LLC
Basis of preparation and going concern uncertainty
Proportion of ownership held by the Company			100.00%
NV Marina LLC
Basis of preparation and going concern uncertainty
Proportion of ownership held by the Company			100.00%
Nautical Ventures West LLC
Basis of preparation and going concern uncertainty
Proportion of ownership held by the Company			100.00%
Nautical Ventures Panhandle LLC
Basis of preparation and going concern uncertainty
Proportion of ownership held by the Company			100.00%
Vision Watersports Corp
Basis of preparation and going concern uncertainty
Proportion of ownership held by the Company			100.00%
EB Rental Ventura Corp.
Basis of preparation and going concern uncertainty
Proportion of ownership held by the Company			100.00%
EB Rental FL Corp.
Basis of preparation and going concern uncertainty
Proportion of ownership held by the Company			100.00%
EBR Palm Beach Inc.
Basis of preparation and going concern uncertainty
Proportion of ownership held by the Company			100.00%
Vision Marine Technologies Corp.
Basis of preparation and going concern uncertainty
Proportion of ownership held by the Company			100.00%