The outboard motor comprises a case extending generally vertically and supporting the engine and propeller. The driveshaft extends through the driveshaft housing and is supported in the case for rotation about its axis. The driveshaft housing has a generally box-shaped cross-section along its length and has an elongated upper portion. A rearwardly extending shoe portion is provided to provide the exhaust discharge. For more details kindly visit here outboardengineblog.tumblr.com/post/671747743038013440/interesting-facts-about-the-outboard-motor