From medieval rope-making towns to Russian trade routes and imperial supply experiments, hemp became one of the essential materials supporting British naval power.
Before the Empire, There Was Bridport
Hemp's relationship with English maritime history reaches back centuries.
Records from Bridport, England, describe hempen thread being purchased in 1211 during the reign of King John.
In 1213, the king ordered the production of ropes and cables for ships.
Those early records show that hemp was already an important material for maritime equipment long before Britain developed its later naval empire.
How Russian Hemp Entered the Story
An important chapter began in 1553, when English navigator Richard Chancellor reached St. Nicholas on Russia's White Sea coast.
His voyage helped open direct commercial connections between England and Russia.
The Muscovy Company received its charter in 1555, expanding the trade relationship.
After Arkhangelsk was founded in 1584, the port became an important gateway for Russian exports, including hemp and other naval supplies.
Over time, northern European trade became central to Britain's ability to obtain large quantities of high-quality fiber.
The Ropewalks That Supplied the Fleet
At royal dockyards such as Chatham, hemp was processed through specialized buildings.
Raw fiber entered hemp houses before workers prepared, combed and spun it.
Long ropewalks allowed workers to form strands and assemble the heavy cordage required by naval vessels.
Tarring facilities helped protect certain ropes against moisture and deterioration.
The scale was considerable.
A large ship of the line could require approximately 31 miles of rope, much of it for rigging alone.
1588: Hemp and the Spanish Armada
When England confronted the Spanish Armada in 1588, hemp was already woven into naval operations.
It appeared in rigging, anchor cables and gun tackle, helping ships sail, maneuver and operate their weapons.
As the English and later British navies expanded, their demand for reliable fiber increased.
A fleet could not function on timber and cannon alone.
It also needed vast quantities of cordage.
Britain's Dependence on Russia
By the eighteenth century, British naval supply was heavily dependent on foreign hemp.
Between 1767 and 1782, approximately 95.9% of Britain's hemp imports came from Russia.
Much of the trade moved through Riga and other Baltic ports.
The dependence created a strategic vulnerability.
Britain could build warships at home, but essential materials supporting their operation traveled through international supply networks.
Could the Colonies Replace Russian Hemp?
British lawmakers repeatedly explored ways to encourage hemp cultivation within the empire.
A 1705 act offered a £6-per-ton bounty on qualifying colonial hemp imports.
In 1764, another incentive began at £8 per ton, with later scheduled reductions.
Officials also evaluated colonial fiber quality.
In 1728, the Admiralty reportedly judged a Virginia hemp sample comparable to high-quality Riga hemp.
For the Board of Trade, colonial cultivation represented a possible alternative to dependence on northern Europe.
But economic incentives and encouraging samples did not immediately create a reliable large-scale supply.
The Norfolk Island Experiment
Another proposed solution emerged in the Pacific.
During his 1774 voyage, James Cook observed tall trees and abundant harakeke, also known as New Zealand flax, on Norfolk Island.
British officials considered whether the island could supply materials for masts, ropes and sails.
In 1788, Philip Gidley King's party was instructed to investigate and develop the island's fiber resources.
But harakeke required different processing from European hemp, and the island's timber presented additional challenges.
The ambitious supply plan never developed at the scale officials had imagined.
When Russia Cut Off British Ships
Britain's supply vulnerability became especially clear in November 1800.
Emperor Paul I of Russia imposed an embargo affecting British vessels in Russian ports.
With Britain involved in conflict against France, the disruption exposed how international politics could threaten the materials supporting its navy.
British officials expanded efforts to identify alternative sources in Canada, Ireland, India, New South Wales and elsewhere.
The search reflected the strategic importance of materials that were often overlooked in accounts of naval warfare.
Why Didn't Britain Simply Grow Its Own?
Despite repeated encouragement, colonial hemp never fully displaced Russian supply.
Climatic differences, production costs, processing challenges and established European trade networks complicated the effort.
Russian hemp remained dominant.
Britain's naval advantage depended not on complete self-sufficiency but on its ability to maintain access to international suppliers.
Legacy
Hemp was one of the essential materials behind Britain's rise as a naval power.
It connected medieval rope-making communities, royal dockyards, Russian merchants, colonial farmers and distant Pacific expeditions.
The hemp houses and ropewalks at Chatham demonstrate just how much infrastructure was needed to turn raw fiber into working naval equipment.
Russia's overwhelming share of British hemp imports also reveals a contradiction at the center of the empire.
Britain projected power across the world's oceans while relying heavily on foreign-grown fiber to keep its ships operational.
The history of naval hemp is therefore more than an agricultural story.
It is a story of industry, diplomacy, war and the global supply chains that made seaborne empire possible.
Sources:
Chatham Historic Dockyard Trust, Our Buildings. Primary heritage resource documenting naval rope-making, hemp storage and the Chatham ropewalk.
Historic England, Former Hemp House, Spinning Room and Offices. Official architectural record documenting the importance of hemp processing at Chatham.
James Davey, Securing the Sinews of Sea Power: British Intervention in the Baltic, 1780–1815, 2011. Academic study supporting Britain's dependence on Russian hemp, including the 95.9% import figure.
Bridport rope-making history, St. Michael's Trading Estate historical resource. Documents the 1211 and 1213 royal rope orders.
Te Papa / Council of Australasian Museum Directors, Te Papa Tells a Global Story of Norfolk Island, 2023. Historical context for the Norfolk Island fiber experiment.
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