AI-generated historical interpretation, used as editorial artwork rather than primary evidence.
The pirate world

Keel, frames and beams: the structure beneath the silhouette

A wooden hull joined longitudinal, transverse and curved members into a working shell.

AI-generated interpretation · not an archival image

The keel runs along the bottom of the vessel; floor timbers and frames establish its transverse shape; beams span the hull and support decks. Planking and fastenings connect these members. Smith’s 1627 account explains their relationships rather than one standard pirate-ship plan.

Objects and navigationWooden sailing ships ·seventeenth centuryPrepared 20 October 2026

The keel gives a longitudinal reference

Smith begins his description with the keel, then explains the stem at one end and sternpost at the other. These members help organize the vessel from end to end. A hull drawing that labels only the visible sides misses this underlying relationship. [1]

The keel is not the entire bottom, and a ship’s curved exterior is not one piece of wood. The structure is assembled from many connected members.

The transverse timbers give the hull its shape

Floor timbers cross the keel, and further curved pieces continue the body upward. Smith describes joining shorter timbers where one piece cannot span the required shape. A keelson lies over the floor timbers as another longitudinal member. [1]

The resulting structure resists forces in more than one direction. Thinking of a simple row of identical ribs is a useful first image, but it cannot supply the actual proportions of a particular ship.

Beams connect the sides and carry decks

The manual describes beams spanning the vessel and curved knees helping bind the structure. Deck planking then forms working levels above the spaces below. [1]

These connections explain why removing bulkheads or upper works from a captured vessel was a significant alteration. It changed an existing arrangement rather than exposing an empty, interchangeable box.

The fastenings are part of the structure

Smith distinguishes wooden and iron fastenings and several kinds of bolts. Their jobs include drawing members together, resisting withdrawal and securing work in different positions. The hull’s strength depends on those joins as well as the size of its timbers. [1]

Surviving material from a wreck may therefore reveal construction choices through a small fastening or fragment, even when the original outline has largely disappeared.

Water had to move inside before it could be removed

The floor structure includes limber holes intended to let water reach the pump well. A passage blocked by debris could interfere with that system. The structural account thus connects directly to maintenance and pumping. [1]

Explore the pump system, the carpenter’s work and the explanatory cutaway. The artwork illustrates broad parts; it is not a recovered measured plan.

Questions, answered.

Is the keel the same as the whole bottom of the ship?

No. It is a principal longitudinal member within a larger assembled hull.

Does a generic cutaway establish the exact frames of Queen Anne’s Revenge?

No. Exact construction needs evidence for the named vessel, not a generic illustration.

Sources & reading notes

Source checks distinguish an artifact, a reported account and a modern interpretation. They do not constitute independent historian review.

  1. A Sea Grammar (1627)Open the keyboarded source transcriptionJohn Smith; Early English Books Online / Text Creation Partnership · Seventeenth-century seafaring manual; TCP transcription released under CC0

    Chapter II, keel, stem, sternpost, floor timbers, futtocks, keelson, beams, knees, fastenings and limber holes. Historical terminology is explained without treating the chapter as a modern construction specification. A prescriptive manual from 1627, not the operating rules of every merchant, naval or pirate vessel. The TCP text preserves gaps and transcription uncertainty. Modernized explanations here do not reproduce its period medical or physical theories as current advice.

Read the editorial method and recorded corrections.
Compass, invented chart and dividers, sounding weight, log and sandglass, and a simple cross-staff type study.See the details.How sailors found their way.Explore the illustrated guide

Keep exploring.

The library
Inside a pirate-era ship.Ship pumps: removing water was continuing laborThe carpenter: a wooden ship was never finishedQueen Anne’s Revenge: a name did not create a new hullHelm, tiller and rudder: follow the steering connectionBlocks and tackles: why the ropes ran through wheels