as a result of this chemicular tampering , way back when the ships were being constructed , he ensured that once the yeast had matured , meticulously engineered to coincide with last week , as soon as a catch was hauled aboard any of the vessels , the fish would instantly absorb this substance from contact with the hull , or deck or whatever and quickly decompose into nothing but a pile of rotting flesh and fish bones , which themselves would eventually go the same way and disintegrate into nothing .