Conical bulbous bow

Details Conical bulbous bow Conical bulbous bow

1974-08-06

1976-03-30

Blix, Trygve M.

Ships

Displacement-type hull

B63B 106

Patent

active

039466876

ABSTRACT:
A novel bulbous bow for bulk carriers comprises a conical bulb with a faired nose, with the axis of the cone substantially parallel to the longitudinal axis of the ship. In a preferred embodiment the cone is a right circular cone and the faired nose is substantially a hemisphere. More particularly, the included angle of the cone is in the range of five to twenty degrees. Although the cone could be faired into the hull, preferably it is not. The longitudinal centerline of the bulb is located between 45 and 60 percent of the design draft below the design waterline. The preferred extension of the bulb, beyond the forward perpendicular, is proportional to the square of design speed with the proportionality factor in the range of 0.015 to 0.04 and preferably 0.035. The cross-sectional area of the bulb at the forward perpendicular may be in the range from 10 to 20 percent of the amidships cross-sectional area.
The bulb, comprising conical and hemispherical sections, is easier and less expensive to fabricate than some of the more complex shapes shown in the prior art.

REFERENCES:
patent: 3438350 (1969-04-01), Gallin
patent: 3455262 (1969-07-01), Weicker
patent: 3511203 (1970-05-01), Buyscoll
patent: 3521590 (1970-07-01), German et al.
patent: 3653352 (1972-04-01), Tomiyama et al.

Affiliated with

Also associated with

Rating

Conical bulbous bow does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Conical bulbous bow, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Conical bulbous bow will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-514165