[lakeman]

This is probably silly of my to ask but hey here we go!!
Wouldn’t the portion of the iceberg above water still raise the sea level somewhat?

[BroJoeK]

"This is probably silly of my to ask but hey here we go!!
Wouldn’t the portion of the iceberg above water still raise the sea level somewhat?"

That proverbial & metaphorical "tip of the iceberg" represents the exact difference is the weight of frozen water (ice) versus liquid water.
When the ice melts, it actually increases liquid volume.