Translation please.

[Vietanhpham_Winter]

Can you help me translate this sentence? Simply surviving those ocean crossings of indeterminate length, in open canoes, to arrive on the shores of uninhabited and hitherto unknown islands, was a formidable achievement. I don't know how many grammar points are used here. Thanks.
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Nothing's impossible! Never say never! They're what I've been following. Hope you to follow them too!

[Mkostya]

The sentence tells that just surviving crossing the ocean is a huge achievement. The middle of the sentence describes the ocean crossings: they are of indeterminate length, they are in open canoes and their purpose is arrive on the shores of islands, which are uninhabited and unknown so far.

Did you mean such explanation or something else?

Kostya

[Vietanhpham_Winter]

Thank you for the explanations.
_________________
Nothing's impossible! Never say never! They're what I've been following. Hope you to follow them too!