Abstract: A marine craft which includes a portable drive assembly temporarily attached to the transom, the portable drive assembly including an elongated drive housing enclosing an upper drive assembly and a lower driven assembly and a timing belt connecting the upper drive assembly to the lower driven assembly. The craft further includes an engine mounting plate attached externally to the drive housing adjacent the upper drive assembly perpendicular to the drive housing. The lower driven assembly also has a propeller shaft at least a portion of which is enclosed within a shaft housing attached to the drive housing adjacent the driven assembly, the shaft housing extending in excess of 18 inches beyond the drive housing, and a propeller attached to the propeller shaft.