Ukraine doesn't effectively have an air force or navy. And look how well that's working out for Russia. They don't need a massive navy. Iran doesn't need to steam across the ocean and lay siege to Washington D.C. in order to win this war. They just need to outlast the US and Israel. It's telling that, despite Iran lacking a navy, the US is keeping its own navy clear of the Straight of Hormuz. Instead the actual ships are being kept far away from the Iranian coast, and targets are being bombed via long range aircraft and stand off munitions. That's tellingly the exact same tactic Russia has been forced to use over Ukraine.