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The 70' Fast Aluminum Trawler Yacht

'Ocean Express'

The 70' Fast Aluminum Trawler Yacht - OCEAN EXPRESS - Kasten Marine Design, Inc.
Aft View | Forward View

Copyright 2014 Michael Kasten

General Concept

The all aluminum "Ocean Express 70" design has a fast semi-displacement hull form. The long fine run combined with light displacement is able to yield an excellent combination of speed and economy. Relatively short overhangs maximize WL length and therefore vessel speed and accommodation space below.



The displacement to length ratio shows the vessel to be quite light. The result is that the displacement regime 'hull speed' will be in excess of 14 knots with approximately 500 hp. For higher semi-displacement speeds, more hp will be applied and speeds in excess of 20 knots are possible (depending on fuel load and other vessel loads).


The interior layout is very similar to that of the 49' Vagrant, except that the Ocean Express 70 is considerably larger.

A 'walkthrough' of the layout below on the Ocean Express starts with a large guest stateroom right forward; a head and shower to port; then a generous galley and saloon. A stairway on center leads up into the pilot house.  The pilot house is quite large and contains a separate day head and small dinette. Below the Pilot House sole are the engine, machinery space, and bulk fuel tanks. A companionway leading down and aft of the pilot house opens to a large owner's stateroom with en-suite head, shower and bathtub.

Aft of the House a large covered after deck.  A stairway from the aft deck leads forward and up to a unique feature - a large recessed flying bridge with ample room for a piloting area and an open-air dining area having a bimini cover over all.

Ocean Express 70 - Fast Motor Yacht - Kasten Marine Design, Inc.
 Ocean Express 70 - Click for Larger Image

Design Summary

The intent of this design has been to fit the maximum accommodations into a fast cruiser of 70 feet LOA. 

This hull form has also been developed into a few other vessels, each having a different cabin and interior layout. Among them are the 49' Ocean Runner, the 48' Coast Runner, the Rhumb Runner 48, and the very cool 70' Express Cruiser - a fast motor yacht inspired by the Rum Runners of the prohibition era...!

The Ocean Express 70 shown here is a prototype - a concept design. The design has been modeled, the hydrostatics calculated and the interior has been planned but remains to be detailed.

If this or a similar design is of interest, please inquire for more information.