As with the 415 the 450 maximises aft deck space by using all-round transom seating. The built in steps on both sides of the transom give access directly to the side decks, with gates each side to enter the cockpit area.
Interior layouts reflect the owners priorities and intended use. The standard layout provides for a very large deck saloon, with a third side cabin with two single berths. The alternative is to have a dinette area on the same level as the gallery and delete the third cabin. The forward guest cabin is fitted with an island double as standard, although in some boats twin V-berths have been preferred.
Typical engine configuration is 318HP-500HP twin diesels from either Caterpillar or Volvo.