If you rock too hard while in a sailboat, you get seaweed up your nose.
(Unless that's a reference to something that went over my head. No, you're a towel.)
No, it's not a reference to anything. And how do you get seaweed up your nose on a sailboat?
You can't sail from Tiburon to San Francisco at midnight with nothing but the sound of the wind in the rigging and water against the hull in a motorboat. You always have noise and vibration (not the good kind) and exhaust.