The dory is a small, shallow-draft boat, about 5 to 7 metres or 16 to 23 feet long. It is usually a lightweight boat with high sides, a flat bottom and sharp bows. They are easy to build because of their simple lines. For centuries, dories have been used as traditional fishing boats, both in coastal waters and in the open sea. Variant spellings are doree and dori.
Strictly speaking, the only true defining characteristic of the dory is that it is planked up with wide boards, "It should be well understood, that it is the dory's special mode of construction, not its hull shape, that sets it, and its related sub-types apart from other boats" More generally speaking, the dory can be defined as a small boat which has:
- a flat bottom, with the bottom planks fastened lengthwise (bow to stern).
- a hull shape defined by the natural curve of a sawn plank (never steam bent).
- planks overlapping the stem at the front of the boat and an outer 'false' stem covering the hood ends of the planks.
- (with some exceptions) a fairly narrow transom often referred to as the 'tombstone' due to its unique shape.
The hullform is characterized by a bottom that is transversely flat and usually bowed fore-and-aft. (This curvature is known as 'rocker'.) The stern is frequently a raked surface (a narrow transom) that tapers sharply toward the bottom forming a nearly double-ended boat. The traditional bottom is made from planks laid fore and aft and not transverse, although some hulls have a second set of planks laid over the first in a pattern that is crosswise to the main hull for additional wear and strength.
Despite their simplicity of design, dories were known for their seaworthiness and rowing ease, although this reputation possibly owed more to the skill of the operators than inherent factors in the design. Because of their narrow flat bottoms, they do not exhibit much initial stability and are 'tippy'. Traditionally, they were designed to carry large amounts of wet fish-often over a tonne. They were commonly rowed by experienced seamen who understood the characteristics of the design and could compensate for the limitations. Dories exhibit high ultimate stability, tipping to a point and then stiffening up significantly and resisting further rolling tendencies. By design they are quite voluminous and can carry a heavy load for their size. Their high sides give ample freeboard even when heavily loaded, and as the load increases, so does the stability.
With no clear definition of the type, and few early illustrations or detailed descriptions to go by, the early history of the dory is muddled at best. John Gardner identifies the first pictorial representation of a dory to a 1497 painting by Albrecht Dürer. The first known mention of a dory in detail was in 1719."Until about 1870, there are to be found no recorded dory lines, details, nor any list of particulars that would enable us to say with certainly what the earlier dories were really like." In its most popular form, the dory was created in New England fishing towns sometime after the early 18th century. Howard Chapelle writes, "... some kind of dory boat was in use on the Massachusetts coast as early as 1726." A definite precursor to the dory type was the early French bateau type, a flat bottom boat with straight sides used as early as 1671 on the Saint Lawrence River. The common coastal boat of the time was the wherry and the merging of designs between the wherry type and the simplified flat bottom construction of the bateau initiated the birth of the dory. Other antecdotal evidence exists of much older precursors throughout Europe. England, France, Belgium, and Italy all have small boats from the medieval periods that could reasonably be construed to be predecessors of the Dory.
Simeon Lowell in Amesbury Massachusetts is credited with building the first dories around 1793 which he referred to as 'wherries'. What this boat looked like is open to conjecture but from various references it can be inferred to have been a flat bottomed boat. While some assume that this boat followed the Banks dory shape, the Grand Banks cod fisheries for which the Banks dory was designed didn't start operating until the 1830s.
Simeon Lowell founded Lowell's Boat Shop in Amesbury Massachusetts in 1793. This is the birthplace of the Dory. Lowell's Boat Shop is now a non profit working museum still dedicated to building classic dories and skiffs. Simeon's grandson, Hiram Lowell developed the Banks Dory. The major innovation was the straight sides to the new Banks Dory. This made the boats stackable on top one another. This revolutionized the fishing industry because now fisherman would stack 10 Dories on a larger boat and use all 10 Dories at once in order to maximize yield 
The earliest known dories were beach dories developed for beach launched fishing operations. The principal example is the Swampscott dory, named after Swampscott, Massachusetts where they were introduced. Early wherry types were modified with flat bottoms and borrowed construction techniques found in the French bateaus. This resulted in an almost round sided boat with a narrow flat bottom, well suited to launching through the surf and able to hold up against aggressive ocean conditions. The narrow 'tombstone' transom assured that the boat rode well against a following sea or breaking surf as well as making the boat easy to row.
It is often assumed that the Banks dory was the original dory. In fact, the Swampscott dory preceded the Banks dory by fifty years. The Banks dories first appeared in the 1830s and were probably the most numerous at their height of popularity. They were "designed specifically as a ships boat but it became so well known and so common a type that it not only was used alongshore but influenced the design of some local fishing boats". Adapted almost directly from the low freeboard, French river bateaus, with their straight sides and removable thwarts, bank dories could be nested inside each other and stored on the decks of fishing schooners, such as the Gazela Primeiro, for their trip to fishing banks, such as the Grand Banks. They are not as handy or easy to row as the slightly more complicated Swampscott dories but were mass-produced in much larger numbers. Banks dories were also popular as work boats.
As the need for working dories diminished, the Swampscott or beach dory types were modified for pleasure sailing. These Sailing Dories became quite popular at the beginning of the 20th century around the town of Marblehead, Massachusetts. They were generally longer, yet remained narrow with low freeboard and later were often decked over. Another common distinctive feature of the sailing dory was a long boom on the rig that angled up with a mainsail that was larger along the foot than the luff. The Townclass, a sailboat still raced today is a late example of a sailing dory. Earlier types were the Beachcomber and Alpha series, built by the famed dory builder William Chamberlain, and raced extensively in Salem and Marblehead between 1900 and 1910. Few of the original Chamberlain-designed dories remain intact. An original Alpha Dory can be seen at the Marblehead Historical Museum in Marblehead, Massachusetts.
The river dory resembles the Banks dory on first look but are a different boat, built in a different time, in a different place, for a different purpose. By the strict definition at the beginning of this article however, the river dory is very much a dory adapted for use on the river rapids of the Western United States. The key features of this dory are very heavy construction to take hits on boulders, much greater beam than is normal in a dory, very flared topsides to prevent waves coming on board, a high central seating position for the skilled master rower, extensive built-in buoyancy/storage tanks to shed water and keep the boat afloat in the event of a capsize. This type was pioneered by Nevills in the 1930s.It has special features such as inboard strong metal rowlocks, long low-geared oars, long blade oars to operate in the highly aerated waters in rapids. In rapids the master rower faces down river so she can see the rock obstacles. In a rapid the oars are used to steer the boat rather than to propel it.
With the introduction of the outboard motor the "semi-dory" or "half-dory" was developed. Because typical dory bottoms are so narrow, the thrust of an outboard motor pushes the stern of the dory down creating a very unstable and inefficient boat. The semi-dory is basically a Swampscott dory with the stern widened and the rocker straightened aft to support the thrust of the outboard motor.
There are other larger power dories, notably the St Pierre dory, about thirty feet long and similar in shape to the Banks dory, and the Boston power dory of Boston Harbor. Most modern power dories have a wider stern to resist the weight of the outboard. Because flat bottom boats have a well founded reputation for pounding in anything other than flat sea conditions this type is not widespread. Some designers have taken element of the dory and incorporated these in V bottom boats.The planing shoe is a narrow flat section on the bottom of some V bottom boats that promotes planing at lower speed. The New Zealand designer John Welsford created a plywood, multi chine design with a wider planing shoe, suited to lower horsepower motors (10-30) suited to river and inshore use.
Other, less common but traditional types were the double ended surf or Gunning dories. The pointed bow and sterns made these boats excel at launching through the surf. Gunning dories were built quite light in comparison to the more traditionally constructed beach dories.
The "dory skiff" is another variation of the dory type. For inshore work the transom was widened, freeboard was lowered and more rocker introduced into the bottom making an exceptionally easy-to-row boat that was more stable (initial stability not ultimate stability) than their offshore cousins. However they are not as seaworthy as the Swampscott or Banks dories.
These are the principal types of traditional dories produced. There are many more named types but the names typically refer to the same type built one town over. For example, the Cape Ann and Gloucester dories are essentially Banks dories with a centerboard and rig for sailing in local waters. Gloucester was the home port to over 300 fishing schooners at its peak and was the main harbor on Cape Ann. Swampscott can be seen from the breakwater at Gloucester harbor. Essex, Newburyport, Salisbuy, and Amesbury, all big producers of dories, are all towns immediately north of Cape Ann and all have a particular dory 'type' named after them. Differences, if they existed, were minor in nature.
In recent years there has been a resurgence of interest in the dory style. Many contemporary marine architects and backyard amateurs have been experimenting with the dory type and refining the type to some extent. These boats are designed primarily for pleasure and utilize new building materials and techniques not available to the originators of the dory. The basic form remains however ensuring the survival and growth of the type. New England is no longer the center of dory construction and dories have been built all over the world.
Modern dory designers include Phil Bolger of Gloucester and John Welsford of New Zealand. Most modern dories are about 15–16 feet long, built of lightweight plywood, fastened by fibreglass tape and epoxy resin. They are much lighter than traditional dories and compensate for the lack of initial stability by having slightly wider bottoms and very low (8 inch high) seats and are fitted with skegs for directional stability. Welsford recommends the carrying of a water container on a rope that can be thrown to either the bow or stern to adjust trim in different sea conditions. Unlike a conventional wide bottom dinghy it is dangerous to sit or stand in the extreme ends due to the minimal displacement. Modern designs, like their traditional counterparts, gain significant stability when heavily laden amidships.
- Fishing dories
- Paintings by Winslow Homer, 1836–1910
The Fog Warning, halibut fishing, 1885
- Gardner, John (1987), The Dory Book. Mystic Seaport Museum, Mystic Connecticut. ISBN 0-913372-44-7.
- Chapelle, Howard L. (1951), American Small Sailing Craft, WW Norton and Company, New York, London. ISBN 0-393-03143-8.
- Walker, David A. and Wayne Barrett (1990), Small Wooden Boats of the Atlantic, Halifax, NS: Nimbus (1990)
- Brewer ES and Brewer T (1993) Understanding Boat Design Pages 10–12, McGraw-Hill Professional. ISBN 9780070076945.
- Molyneaux, Paul (2006) The Doryman's Reflection: A Fisherman's Life. Thunder's Mouth Press. ISBN 978-1-56025-844-5.
- Gardner, John (1996) Building Classic Small Craft I&II. International Marine/McGraw-Hill, Camden, ME. ISBN 0-07-022864-7.
- The Dory Page
- The Dory Shop
- Dan's Dories (modern and historical dories)
- www.buildyourowndoryboat.info (Build Your Own Dory Boat)
- Lowell's Boat Shop, Birthplace of the Dory
- Dory Builder Documentary produced by Oregon Field Guide