Sounds like either a restriction in the line, such as a kink in the copper tubing, or the faucet is partly blocked. Both should be easy to find and fix.
Do all the hot water faucets have this problem, or just the one in the galley?
If it is only the one in the galley, check the line from where it seperates from the other hot water feed lines. Follow it to the galley, making sure there are no sharp bends, pinches, or kinks. If this is all good, and you have good pressure up to the faucet, you have a blockage in the faucet. A new faucet is relatively inexpensince, and not hard to change out.