Roger, no trace of " Sagat",
but " Saggat" and "Suorva" were sisters built for Grangesberg Oxelosund in 1943 & 1944 repectively by A/B Gotaverken at Gothenburg.
Lloyds Register does not show them as strengthened for the carriage of ore but that might not preclude them from carrying it as the company's main trade was just that.
They were of the open shelter -deck type.
This is not the Grangesberg - Oxelosund funnel either.
That was Black with a yellow "G" within a yellow ring on a broad blue band. The name on the bow does not seem to match either ... hmmm. @>$%£*?&%
I have just done some research ! This is not the SAGGAT!! You have the wrong name.
See here for the real " Saggat" :-
Try again with a better clue please !
Might be a Finnish flag at the stern ?