I was wondering if it is sand, can it be liquefied using vibration around the hull to help loosen it? Something like what they use to vibrate concrete while pou

I was wondering if it is sand, can it be liquefied using vibration around the hull to help loosen it? Something like what they use to vibrate concrete while pouring it. https://www.youtube.com/watch?v=tV4sTbpa7Hc https://www.youtube.com/watch?v=tV4sTbpa7Hc