One's going to sea, so it's said — more easily with this? (3,6)

I haven't cracked this one yet — but the brilliant team at Times for the Times have:

Ones going to gives I’LL, sea gives OCEAN, put the two together for homonym (so it’s said). I have no ideas on why eye lotion makes going to sea easier, unless sea is doing double duty for a homophone of see.