Beached Merchants?

[GnarPow]

I have never seen this before until my last 2 patrols and have no way to explain it...

In the third patrol I came across a medium merchant just churning his props trying to drive into a beach but not taking any damage.

On my 4th patrol I came up to a small merchant just parked bow into another beach with engines stopped.

Both times these ships took massive amounts of ammo to sink I'm assuming due to the fact that they werent even really floating, so sinking was a bit harder, had to really blow them up.

Anyone else seen this? seems so odd.