ha! I think it sounds like overkill, but rather be safe than sorry.
In case your ship got rerouted b/c of a hurricane, or swimming in the ocean water was harder on your flanges than you thought and you got shorter wear time, and you cut one way to big and got leaks, and you dropped one in the toilet, I think you'd still have enough.
But I would take some with you on your carry on and some in your baggage (assuming you are flying to port).
Have fun!!!