Tugboat, or Tug, a boat with a powerful engine used to tow or push ships and barges. Tugboats are usually small and are used mainly in harbors, rivers, and canals. They are generally about 100 feet (30 m) long and about 25 feet (8 m) wide. Most tugs use diesel or diesel-electric engines of up to about 2,000 horsepower. Larger, oceangoing tugs, up to about 300 feet (90 m) long, are used to aid disabled ships.
The massive explosion at a fertilizer operation in the town of West, Texas, raised the question: With the tremendous amount of fertilizer the world blows through, are accidents like this a frequent occurrence?
The Type 89 CHI-RO tank was suited to fight a war where the enemy was infantry equipped with small arms, machine guns, and a few larger guns. It was this type of war that the CHI-RO fought in the 1930s. Check out design of the Type 89 CHI-RO tank.