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WARNING
BEFORE DRILLING THE MOUNTING HOLE FOR THE SEA COCK THE
ENTIRE BOAT MUST BE OUT OF THE WATER. DRILLING THE SEA COCK
MOUNTING HOLE WITH THE BOAT IN THE WATER COULD CAUSE
EXTREME FLOODING AND SINK THE BOAT OR CAUSE SEVERE WATER
DAMAGE TO EQUIPMENT IN THE BOAT.
IMPORTANT
WHEN SELECTING THE SPOT FOR THE SEA COCK, BEFORE DRILLING
THE HOLE, MAKE SURE THAT THE PUMP AND WATER STRAINER CAN
BE INSTALLED IN THE SAME ADJACENT AREA AND REMAIN BELOW SEA
LEVEL. ALSO CHECK THE OPERATION OF THE BALL VALVE SHUT OFF
HANDLE ON THE SEA COCK FOR ANY POSSIBLE INTERFERENCE ONCE
INSTALLED.
When selecting your sea cock mounting spot, you should also try to select a spot where
the pump and water strainer are a maximum distance of 2 feet from the sea cock. We
realize that in some boats it is not possible to incorporate the two foot rule. However,
remember the closer you keep these three items together, the fewer pump priming
problems will be experienced.
Once you are sure that all components will fit in the spot selected and remain below sea
level and the boat is totally out of the water, you are ready to cut the sea cock mounting
hole. (SEE WARNING ABOVE)
IMPORTANT
BEFORE CUTTING YOUR SEA COCK MOUNTING HOLE CHECK THE
OUTSIDE HULL IN THE AREA YOU WILL BE CUTTING TO MAKE SURE
THAT THERE ARE NO RIBS OR OTHER HULL VARIATIONS WHICH WILL
NOT ALLOW THE SEA COCK FOOT SCOOP TO MOUNT FLAT AGAINST
THE HULL. IF THERE IS ANY CONCERN, WHAT-SO-EVER, DRILL A
SMALL PILOT HOLE FIRST WHICH CAN BE EASILY SEALED IF
INTERFERENCE EXISTS.
If you are using a sea cock assembly furnished by Mermaid, we recommend that a 1-1/16
inch hole saw be used to make this hole. If you are using a sea cock purchased
elsewhere, you must use the appropriate hole saw for that specific sea cock.
IMPORTANT
DRILL THE 1-1/16” SEA COCK MOUNTING HOLE AND PILOT HOLE AT
THE SAME ANGLE AS THE HULL. THIS WILL INSURE THAT THE FOOT
SCOOP LIES FLAT AGAINST THE HULL.
Once the sea cock hole is drilled, inspect the hole to determine if your boat has a
"corded" hull. That is, a hull not of solid fiberglass, but two layers of fiberglass
separated by balsa or foam. When not properly sealed, “cording” acts like a wick,