A Walkaround boat is a cross between a center console and a cuddy boat or express. Like a center console boat, it is mostly used for fishing and has a full length primary deck or cockpit but also has a small cabin (cuddy) for berths and a head in the center of the boat in front of the console.
There are two different types of walkaround boats, those produced by production boat manufacturers and those built by custom & semi custom builders. Most of the production walkarounds have steps leading to the bow with a low gunnel giving more interior room. Custom & Semi-custom walkaround are more fishing oriented and have full gunnel depth all the way to the boat without stairs.
Most production walkaround boats are outboard powered whereas the majority of the custom & semi-custom are inboard diesel powered.
Video Walkaround (boat)
References
Source of the article : Wikipedia