Backbone 1.6mm Stoppered Longline – 3000m Quality Spool

The Backbone 1.6mm Stoppered Longline backbone is a purpose-built nylon mono backbone designed for commercial longline operations where strength, dependable performance, and predictable handling matter. Developed to meet the exacting standards of the Norwegian fishing industry, this backbone brings precision manufacturing and proven reliability to longline rigs around the globe.

Why this backbone stands out

• 1.6mm nylon mono-filament backbone delivers a balanced blend of strength and flexibility, capable of withstanding demanding offshore conditions without compromising line feel or rig geometry.
• Stoppered spacing every 2 metres provides a consistent hook layout and a repeatable rigging framework, making setup quicker and more reliable from boat to boat.
• 3000 metre spool minimizes re-spooling downtime in the boatyard or on the water, keeping your fleet moving during peak seasons.
• Secure stoppers are manually tied and glued to lock positioning and reduce slippage under load, ensuring your hooks stay where you set them.
• Breaking strain ~115 kg (259 lb) supports heavy-duty applications and larger offshore targets without sacrificing handling.
• Designed for longline use as a scalable foundation for tailored hook configurations across diverse species, from cod to halibut and beyond.
• Heritage and engineering rooted in decades of precision manufacturing from AJ Fishing Industries, now offered through Sea fish with a global reputation for rugged marine gear.
• Predictable geometry reduces gear wear from misalignment and helps achieve uniform rig layouts, improving catch consistency and operational efficiency.

What this means in the field

For commercial longline operators, fleet managers, and researchers who demand robust, repeatable setups, the Backbone 1.6mm Stoppered Longline provides a dependable backbone that stands up to constant submersion, tension, and daily use. The 2‑meter stopper spacing creates a scalable, easy-to-replicate rigging framework that simplifies crew training, reduces reties, and extends line life compared with backbones without stoppered spacing.

Ideal use cases

- Offshore longline operations targeting cod, halibut, and other pelagic or demersal species

- Fleet-wide rigs where uniform hook spacing improves catch rates and gear life

- Research projects requiring consistent line geometry for data accuracy and repeatable results

Practical tips and best practices

• Store the spool in a dry, clean environment and protect the line from direct sunlight when not in use.
• When rigging, count off the 2-metre intervals to maintain the intended layout and minimize reties on deployment.
• Inspect stoppers regularly during maintenance cycles; reapply adhesive if any positioning shifts are observed.
• Pair with compatible longline hooks and rigs to maximize the predictable performance this backbone provides.

Technical at a glance

Diameter: 1.6 mm nylon mono-filament

Stoppered spacing: 2 metres

Spool length: 3000 metres

Breaking strain: ~115 kg / 259 lb

Designed for: Commercial longline use, scalable hook configurations

From Sea fish, backed by the engineering legacy of AJ Fishing Industries, this longline backbone is built to deliver reliable, repeatable performance across demanding offshore environments. If you’re building or refitting a fleet’s longline rigs, this 3000m quality spool offers a proven foundation for efficient, durable operation season after season.