Hi, I'm afraid it's taken a bit of time, I couldn't remember much more than you, but your request strirred me into action, and I've now got a copy courtesy Dr. Morgiana Halley who collected it as part of her ethnographic research into WW2 convoys.

SEAMAN'S PRAYER

The LORD is my pilot; I shall not drift.
He lighteth me across the dark waters;
He steereth me in the deep channels;
He keepeth my log.

He guideth me by the star of holyness[sic]
For His name's sake.
Yea, though I sail 'mid the thunders
And tempests of life,

I shall dread no dangers;
For THOU art near me.
Thy love and Thy care,
They shelter me.

Thou preparest a harbor before me
In the homeland of eternity.
Thou anointest the waves with oil;
My ship rideth calmly.

Surely sunlight and starlight shall
Favor me on the voyage I take,
And I will rest in the port of
My GOD forever.

Pete M