Research Note


Venetian Gondola

John Harland

Any modeler seeing the gondola on the canals of Venice must be tempted to think of its modeling possiblities, and the Gilberto Penzo Homepage mentioned by Fred Hocker is an absolute mine of information about the craft itself and how it is handled. The design of the hull is very sophisticated and because of this the prospective modeler faces an unusual challenge. If he has built a truly authentic representation of the prototype, the casual observer will look at the model and note that everything seems bent out of shape somehow, at best resulting in uncomplimentary thoughts, and at worst disparaging comments about the skill of the modeler. Why is the gondola hull so special?

Like another asymmetrically hulled craft, the Chinese Crooked Sterned Junk, the gondola is rudderless, and in each case there is a reason for the asymmetry. The gondolier rows his craft standing up, his body-weight on the port side and very far aft, with the oar blade contacting the water well out to starboard. Because of this imbalance, the gondola would, other things being equal, tend to swing round in a steady counterclockwise circle rather than going ahead. To some extent this tendency is compensated for by the skilful way in which the return stroke of the oar is made, but more important is the very subtle design of the hull. The weight of the gondolier would cause a symmetrical gondola to list to port. However, the hull features a sort of banana-shape as viewed from above, with the center-line following a shallow 'C', convex to port. The frames are longer on the port side and give the hull more resistance to forward motion and greater flotation on that side, and consequently the craft has both a tendency to turn to starboard, and a natural list to starboard particularly once passengers are gotten aboard. The point of deepest immersion is well aft of the center point, and for most of its length, the flat bottom inclines slightly downwards towards the stern. It also inclines down towards the starboard side, and when under way the craft advances in a slightly crabwise or sidling fashion, not dissimilarly from a left ski in snowplow configuration, with the boat's center line inclined somewhat to the right of the direction of travel. The heavy iron 'Ferro' which decorates the stem helps compensate for the weight of the gondolier, and when the boat lies empty at its moorings and is viewed from fore or aft, the deviation from the vertical of Ferro and stern posts is acutely evident, as they lean away over towards the port side, with the twist being greater astern. To some extent this is an illusion, since the degree to which the hull itself is listing is much less than this suggests.
{John Harland}


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