The Present - Sinking of a barge

Photo send by a friend in Singapore. This barge, named Semco Giant V, sunk around the Batam water recently. The sinking was caused by malfunction of water ballast pump. What is the significant of this incident?.......

.....I was standing on the same barge, on the control deck, few months ago. The control deck still on the surface of water in the 1st picture. We were inspecting the same barge, though she appears to be overworked, we certified it fit for that particular marine adventure. This barge is submergesible type ie that can sink itself below water and lift herself up again, made to carry oil paltform.