The Nautical Encyclopedia
Patterson’s Illustrated Nautical Encyclopedia — Howard Patterson, 1891
A full-rigged ship under sail — engraving from Patterson’s Illustrated Nautical Encyclopedia
“Ship” — from the engravings of the 1891 edition

A Dictionary of the Sea

Howard Patterson’s illustrated encyclopedia of 1891 gathers the whole language of the mariner — the sea terms of sail and steam, the shipwright’s craft, the navigator’s art and the man-of-war’s custom — here arranged from A to Z.

5,092 entries · five branches of sea knowledge · A to Z
⚓ Play Our Nautical Trivia Game ⚓ Twenty questions from the book — find out if you are a “Land Lubber” or an old “Sea Dog.”

Browse A to Z

A
182 terms
B
470 terms
C
495 terms
D
213 terms
E
109 terms
F
304 terms
G
195 terms
H
243 terms
I
73 terms
J
84 terms
K
56 terms
L
267 terms
M
256 terms
N
86 terms
O
77 terms
P
284 terms
Q
38 terms
R
239 terms
S
796 terms
T
326 terms
U
47 terms
V
42 terms
W
177 terms
X
1 terms
Y
22 terms
Z
10 terms

The Superstition Locker

⚓ Open the Superstition Locker ⚓ The Flying Dutchman, Davy Jones alias Jimmy Squarefoot, the windy-cap king and why parsons made bad shipmates — eight strange entries from the fo’c’s’le.

The Five Branches

General Sea Terms

The common speech of the sea — from “aback” to “yawl,” the words of ships, sails, rigging and the sailor’s life.

2960 entries

Shipbuilding Terms

The shipwright’s vocabulary: keels, frames, planking, fastenings and the anatomy of a wooden hull.

343 entries

Navigation Terms

The navigator’s art — instruments, observations, sailings and the working of the ship across the chart.

850 entries

Marine Engineering Terms

Below decks in the age of steam: boilers, engines, condensers and the machinery of the modern vessel.

370 entries

Naval Terms

The man-of-war’s world — guns and gunnery, ranks and ceremonies, signals and the customs of the service.

569 entries

Tables & Appendices

A Table of Specific Gravities

The comparative weights of metals, woods and waters, as given for the shipbuilder.

Properties of Saturated Steam

The engineer’s table of pressures, temperatures and heats of saturated steam.

Nomenclature of Gun Carriages

The named parts of the gravity-return broadside and shifting carriages, and the Hotchkiss field carriages.

Rights & ReuseThe complete text of The Nautical Encyclopedia (1891) is in the public domain in the United States — like all works published before 1928 — and is free to read, download, quote, teach from, and reuse. This digital edition (its transcription, restored images, and site design) is © 2026 PhotoOpAI, and any editorial commentary we add is clearly marked as ours; the underlying public-domain text carries no such restriction.