[parsifal]

There is one I always wondered about:

Bread Pie at morning
Sailor take warning.

Does this have to do with eating hard tacky for breakfast means that the food supplies are running low? parsy.

[Junior]

It's "Red sky in the morning, sailor takes warning. Red sky at night, sailor's delight." Weather systems in the Atlantic move from east to west; a red sky (the sun reflecting off clouds) in the morning indicated a weather front was moving toward you. A red sky at night (the evening) indicated the weather front was behind you.

[Shooter 2.5]

I don't know. It may be. I wonder if they had an entire "Sailor's warnings" group of verses. The only one I knew about was the one that was about storms.
Red sky in morning,
Sailor take warning.