Understand your boat: Hulls

29 November 2016

A yacht is not a usual vessel and a trivial thing that everyone knows much about, it is in fact a complex structure with its own peculiarities and special features that are not seen in anything else. Starting our excursion into the world of yachts and what they consist of, let’s talk about hulls.

There are two basic types of boat hulls – displacement and planing.

Most pleasure yachts feature planing hulls which are designed to rise up and glide on top of the water. These boats may operate like displacement hulls when at rest or at slow speeds but climb towards the surface of the water as they move faster. Boats with planing hulls can skim along at high speed, up to 32-35 knots (51-56 km/h), riding almost on top of the water rather than pushing it aside.

Boats with displacement hulls move through the water by pushing the water aside and are designed to cut through the water with very little propulsion. Boats with displacement hulls are limited to slower speeds, up to 15 knots.  Most large cruisers and most sailboats have displacement hulls, allowing them to travel more smoothly through the water.

Displacement hulls are ideal for calm and long cruises: displacement boats will usually be wider than planing ones of same length, which gives them more stability at low speeds. Due to their special shape, these boats are also not prone to rolling. They are equipped with lower powered engines, and this coupled with larger fuel tanks gives you longer cruising ranges.

Example of a boat with a displacement hull

Azimut, unlike most other pleasure yacht builders, has paid tribute to this type of hull by introducing a whole collection with the exclusive semi-displacement hulls that enable extremely smooth transition between displacement and planing modes, guaranteeing both optimal stability and comfort while underway and superior response and efficiency of the hull in both modes.

The Magellano collection is unique in its nature because it combines the best features of both displacement and planing hulls: while these boats are stable, have ample space inside and are designed for long cruises, they can still reach the impressive 22 knots (35km/h) to allow you go faster when needed or quickly find shelter during bad weather.



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