Boats
Boats and Boatbuilding INTRODUCTION
BASICS OF BOAT DESIGN
Buoyancy and Weight
Trim and Stability
Structure
Watertightness

SKIN AND BARK BOATS

WOODEN BOATS
Lapstrake Construction
Carvel Construction
Plywood Construction

CANVAS-COVERED BOATS
ALUMINUM BOATS
FERROCEMENT BOATS
FIBERGLASS BOATS
MEASURING AND MODELING
The Half-Model
Lift Models and Lofting

BOAT PROPULSION
Inboard Motors
Outboard Motors
Water-Jet Drive
Surface-Piercing Propeller

Motor-Boat Racing
Rowing
Yachting

Ships
THE EARLIEST SHIPS
Earliest Sailing Vessels
Galleys
Biremes
Triremes
Roman Galleys
Dromons
Lateen-Rigged Ships
Junks
Viking Ships
Cog
Carrack
Caravel
Galleon
East Indiamen
Ships of the Line
Frigates, Sloops, and Brigs
Clippers
Last Days of Sail
FUEL-POWERED SHIPS
Paddlewheel Steamships
Innovative Ships of the Late 19th Century
The Screw Propeller
Iron and Steel Hulls
Double- and Triple-Expansion Steam Engines
Steam Turbines
Diesel Engines
The Great Ocean Liners
Cruise Ships
Cargo Ships
Container Ships
Roll-On-Roll-Off and LASH Vessels
Tankers
Crude Carriers
Product Tankers
Other Specialized Tankers
Tanker Safety
Fishing Vessels
Trawlers
Seiners
Long Liners
Research Vessels
Hovercraft
The First Nuclear-Powered Vessels
Naval Vessels
Aircraft Carriers
Battleships
Cruisers
Destroyers
Frigates
Mine Craft
NEW TRENDS IN SHIP DESIGN
SUBMARINES
Submersible Craft
Torpedo (weapon)
shiptravel.auuuu.com Index

Boat: Surface-Piercing Propeller


An innovation of great interest to designers and users of high-speed boats that was introduced in the 1970s is the surface-piercing propeller, in which the propeller is mounted with its center at the water surface. It is most commonly seen in the form called the Arneson surface drive. The drive shaft projects through the stern of the boat, supported by two hydraulic cylinders that adjust the vertical position of the propeller, a feature of great importance because the angle and level of the boat change as the boat speed changes. The engine is fixed in its position, but two universal joints accommodate changing shaft angles.
Boats
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