I agree with QRQ-30. Having had them I've also never used them and would no longer carry them if they were given to me for use.
A mirror is the best device to use in the daytime and at night a fire is a great signaling.
On the ocean I hope you would carry a bit bigger flare such as a flaregun. Lost at sea a pen flare just isn't going to cut it.
As a fire starter, LOL, I don't think you could list a penflare as a controlled method of starting a fire.
Ever heard of KISS?
Stick with the signal mirror, whistle and a small Bic lighter. I'm betting that's all you'll need to signal gear.
TS
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"The Spartans do not ask how many are the enemy, but where they are."
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