The men, aged 57 and 74, were taking the animals off Shuna island in Argyll when the vessel overturned in Loch Linnhe just after 12pm.
Stornoway Coastguard said the older man was found clinging to the boat. He is said to have mild hypothermia.
Two farmers have been taken to hospital after their boat capsized in a sea loch as they transferred a flock of sheep from an island to the mainland.
The men, aged 57 and 74, were taking the animals off Shuna island in Argyll when the vessel overturned in Loch Linnhe just after 12pm.
Stornoway Coastguard said the older man was found clinging to the boat. He is said to have mild hypothermia.
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