Final answer:
The ships were not able to go to Tarshish due to a powerful storm that destroyed the ship. Other sailors saw wreckage with the initials L.S., indicating the ship was destroyed by the storm.
Step-by-step explanation:
The reason the ships were not able to go to Tarshish was because of a storm. The storm was so powerful that it destroyed the ship and prevented it from reaching its next destination. Other sailors saw wreckage with the initials L.S., suggesting that the ship was destroyed by the storm.