Symbols of Nature (Strange Sea benefits)

There are many much benefits of sea , in past they used boats and ships for attacking on other counties and also used ships and boats for transferring goods from one place to other, but after Innovation  of  Mechanical Advantages they used this technology in ships etc. so all system changed with best quality and they made powerful ships for transferring of Goods and passengers.
Allah says about sea and boats which are driven by the order of Allah in sea, and Allah says when a storm covered them then they cry for sheltered only from One Allah who is Almighty with pure heart.