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formance they’re looking for. The next important dimension is the Styles of Boat and Their Uses
deadrise of the hull, that is, the V-angle, particularly as seen from the
rear of the boat. Boats can have a variable deadrise and variations on Open Dinghy
the theme. The deadrise has a major impact on the performance. In
simple terms the flatter the hull, the less power needed to drive it, the General: The conventional
better the stability, and the harsher the ride. 12-foot aluminium dinghy has
probably been responsible
Of course, we are all trying to get the smoothest ride possible. For for more fish and more
this reason most trailer boats have a transom deadrise of between introductions to boating than
15 and 23 degrees. Most fall in the upper–mid range. Some have a most other boats combined!
variable deadrise. Signature Boats in Australia (formed by the late There were zillions of riveted
John Haines, founder of the original Haines Hunter line in the 1960s Parkercrafts built and lots more
and now run by his sons) has a patented variable deadrise hull that Fyrans, Ramcos and other
goes from 21–33 degrees for which the company claims some very brand boats, too. A great way to learn how to use a boat.
impressive stability and fuel economy results. Length: From 2 m to about 4.5 m. After that they are getting into the
more serious boat category.
Logically, of course, the forward section of the hull has a major Construction: Most are alloy, but there are still many fibreglass and
influence over how well the boat tracks, how much the hull pounds timber dinghies to be found.
and the amount of lift created. Use: Inshore fishing, as a tender for larger boats.
Special Features: Stability is an issue and moving around a dinghy is
By now you really should be getting the point I made above — next to impossible. Most are tiller-steered, but some bigger dinghies
every boat is a compromise. have steering and remotes fitted.
Then we get to the chines. The width, angle and intersection point Gunwale
of the chines has an impact on the design too. On most aluminium Chine
boats the side plates meet the bottom of the hull directly, or with a very
narrow chine. On glass boats the design is much more diverse. The Deadrise Planing Strake
old Sea Nymph hulls, such as the 14' 6" model I refer to throughout
this book, has a gullwing design that was Sea Nymph’s signature. The
chine curves into the hull and really does look like a wing in cross-
section. Generally, though, the chine is a more distinct flat surface.
The chine is able to help with the stability of the boat, as well as
deflecting water down and away from the hull.
Finally, we get to strakes, which are also called planing strakes or
spray rails. Planing strakes are incorporated into a hull to provide extra
lift and to turn down some of the spray. If they’re not well designed,
they increase the harshness of the ride. On a typical fibreglass boat
there are two on each side. Some boats, again my Sea Nymph is an
example, plus nearly every alloy boat, don’t have strakes.
64 How to Go Boating and Where
deadrise of the hull, that is, the V-angle, particularly as seen from the
rear of the boat. Boats can have a variable deadrise and variations on Open Dinghy
the theme. The deadrise has a major impact on the performance. In
simple terms the flatter the hull, the less power needed to drive it, the General: The conventional
better the stability, and the harsher the ride. 12-foot aluminium dinghy has
probably been responsible
Of course, we are all trying to get the smoothest ride possible. For for more fish and more
this reason most trailer boats have a transom deadrise of between introductions to boating than
15 and 23 degrees. Most fall in the upper–mid range. Some have a most other boats combined!
variable deadrise. Signature Boats in Australia (formed by the late There were zillions of riveted
John Haines, founder of the original Haines Hunter line in the 1960s Parkercrafts built and lots more
and now run by his sons) has a patented variable deadrise hull that Fyrans, Ramcos and other
goes from 21–33 degrees for which the company claims some very brand boats, too. A great way to learn how to use a boat.
impressive stability and fuel economy results. Length: From 2 m to about 4.5 m. After that they are getting into the
more serious boat category.
Logically, of course, the forward section of the hull has a major Construction: Most are alloy, but there are still many fibreglass and
influence over how well the boat tracks, how much the hull pounds timber dinghies to be found.
and the amount of lift created. Use: Inshore fishing, as a tender for larger boats.
Special Features: Stability is an issue and moving around a dinghy is
By now you really should be getting the point I made above — next to impossible. Most are tiller-steered, but some bigger dinghies
every boat is a compromise. have steering and remotes fitted.
Then we get to the chines. The width, angle and intersection point Gunwale
of the chines has an impact on the design too. On most aluminium Chine
boats the side plates meet the bottom of the hull directly, or with a very
narrow chine. On glass boats the design is much more diverse. The Deadrise Planing Strake
old Sea Nymph hulls, such as the 14' 6" model I refer to throughout
this book, has a gullwing design that was Sea Nymph’s signature. The
chine curves into the hull and really does look like a wing in cross-
section. Generally, though, the chine is a more distinct flat surface.
The chine is able to help with the stability of the boat, as well as
deflecting water down and away from the hull.
Finally, we get to strakes, which are also called planing strakes or
spray rails. Planing strakes are incorporated into a hull to provide extra
lift and to turn down some of the spray. If they’re not well designed,
they increase the harshness of the ride. On a typical fibreglass boat
there are two on each side. Some boats, again my Sea Nymph is an
example, plus nearly every alloy boat, don’t have strakes.
64 How to Go Boating and Where
