Your argument is like saying that everyone is allowed to just hop over the American border and go everywhere because the are “civilians”.
The moment you start doing illegal things you are no longer a “civilian”.
Those ships have no right to pass through Yemeni waters. They have been warned in advance. Framing trade conglomerates as “civilians” to defend israel’s Genocide is absolutely hilarious.
If you care about civilians go tell israel to stop their Genocide, then Yemen will lift their blockade.
Yemen has not killed a single civilian so far meanwhile America, israel and Britain are killing a child every 10 minutes