ORIGINAL: BBfanboy
I am unclear about where you want to bombard and where you want to use your amphibs.
If you are talking about the coastal hex above the word "Prome", by all means have your BBs go and bombard the Japanese. I doubt the AI would let you do that in one turn though - just a little to far to sprint to, bombard and get away again. If the AI does not carry out the bombardment it should at least move part way there to set up for the next day (probably 3 hexes out). Start reconning the IJA Unit immediately and if you can assign some recon to night to maintain DL. You need a very good DL to bombard a non-base jungle hex.
Seem the wrong image was loaded (fixed), so yes we are talking about that hex.
ORIGINAL: BBfanboy
You can use Amphibs to load troops at a coastal hex, but I think they suffer the same kinds of losses as dropping off troops at a coastal hex - losses of troops and equipment, severe disruption. Fast transport does not try to lift much equipment and uses boats to bring the troops off the beach, so losses are much less in the loading. Of course you lose the stuff left behind.
I am not sure if Bassein has a port - if it does the BBs cannot go up river to reach it and it is a very risky place to go with amphibs - too easy to get bottled up there by the IJN.
Pretty Sure Bassien does not have a port just the airfield.....