Quoted:
"Time the waves, we can't get any closer."
We had something similar happen once: Red Beach at Camp Pendleton was always a bitch to land LCUs on. Close to the beach was a nasty 3 knot littoral current that ran to the north and 2 sets of sand bars you had to punch through before you got to the beach. Many times the LCUs couldn't punch through the inner sand bar.
With timing you could get the HMMWVs ashore
if you timed it just right but the Reserve Marines we were off loading didn't want to pay attention to our directions. 44 of the 48 HMMWVs we off loaded that day did not make it ashore under their own power. Much equipment was drowned that day, I was a busy mother pulling all that gear out of the surf.
ETA: BMU always ate good on the beach. 1st thing we did when we got to a ship was to suck up to the MSs in the galley, we'd load our coolers up before hitting the beach. The smell of scrambled eggs and bacon wafting up the beach in the morning would bring in Marines for miles.