The Life Expectancy of the Marine Engine. The average marine gasoline engine runs for 1,500 hours before needing a major overhaul. The average marine diesel engine will run for more than three times that long and log an average 5,000 hours under the same conditions.
In common usage, export means to send something from your country to a different country, and import means to bring something from a foreign land to your own. Similarly, in computer terminology, import means to bring a file from a different program into the one you're using, and export means to save a file in a way that a different program can use it. Importing and exporting allow different computer programs to read each others' files.
What is an 'Import'. An import is a good or service brought into one country from another. The word import is derived from the word port, since goods are often shipped via boat to foreign countries. Along with exports, imports form the backbone of international trade; the higher the value of imports entering a country, compared to the value of exports, the more negative that country's balance of trade becomes.