It is easy to look up the power of this particular class of ship on Wikipedia. It has a 7-cylinder Wartsila-Sulzer 2-stroke diesel, 44,000 kilowatt or about 60,000 h.p. it isn't, as some people say, like someone in a Honda Civic trying to burn out from a light. It is Newton's laws of motion. "A body at rest tends to remain at rest." When you have 60,000 tons at rest, it takes a bit of a shove to get it moving at all. If you just had the engine ticking over and then inched the throttle further open, it would take you an hour to get out of that lock. There are other ships waiting to lock through. Each lockage is revenue for the canal company. The lock gates are built to take the stress.