This?Do you see a small block on the bottom of the spreader above this? If so, you need to figure a safe way to get a line through the block.
Usually the spreader attachment point is much further out on the spreader. Take a photo showing one whole side of your spreader.
I use them on my boat. In attention to securing the flag halyard, I sometimes hang a fender on them for temporary storage.
While they are "handy" caution in their use might be a consideration. You are attaching lines to a stanchion. The primary purpose of the stanchion is to suspend a lifeline in the air, the last hope of staying on the boat in an emergency. By design a stanchion is not a strong point on a boat. Most are weakly attached to the deck without strong backing plates.strategically located rail cleats are very handy.
As happens often, John is right.While they are "handy" caution in their use might be a consideration. You are attaching lines to a stanchion. The primary purpose of the stanchion is to suspend a lifeline in the air, the last hope of staying on the boat in an emergency. By design a stanchion is not a strong point on a boat. Most are weakly attached to the deck without strong backing plates.
Attaching a line to a cleat attached to the stanchion positioned a fair distance from the deck, gives the opportunity for a small bit of force on the line to demonstrate the effects of leverage on the stanchion base and fasteners in the deck. A flailing jib sheet in a 15knot breeze, hooking onto the ear of a cleat might not be pretty.
As happens often, John is right.
But I would also add that a welded SS stanchion base should hold as well as any cleat.... IF it has a large backing plate beneath and the fastening holes are thru solid resin.
Ours were constructed that way, with full size ss backing plates underneath.
And for sure, I would never tie a mooring line anywhere above that base bracing, but like securing to a shroud base it should hold just fine with no concern (except maybe chafe).
BTW, I have added double bracing struts to all of our midship stanchions -- lucky us, we have a slotted alum. toe rail to bolt to.
So just to be sure we are not confusing an apple for an orange.... I did say I hang bumpers from my rail cleats. I would never attach a dock line to anything other than a true cleat. Seems kind of obvious but maybe it needed to be said. The stress against the bumper is still transfered to the gunwale in exactly the same way as if you attached your bumper to any other area on the rail.While they are "handy" caution in their use might be a consideration. You are attaching lines to a stanchion. The primary purpose of the stanchion is to suspend a lifeline in the air, the last hope of staying on the boat in an emergency. By design a stanchion is not a strong point on a boat. Most are weakly attached to the deck without strong backing plates.
Attaching a line to a cleat attached to the stanchion positioned a fair distance from the deck, gives the opportunity for a small bit of force on the line to demonstrate the effects of leverage on the stanchion base and fasteners in the deck. A flailing jib sheet in a 15knot breeze, hooking onto the ear of a cleat might not be pretty.