The Alaska salmon industry operates through a highly efficient system from catch to processing and distribution. Salmon caught in remote fishing locations are transported to processing plants via midline systems. During this process, the catch is kept fresh with ice or chilled seawater, and thanks to the midline system, regular fishing boats can continue to operate.

Role of the Midline System

The midline quickly transfers the caught salmon to the factory, supporting efficient processing and distribution. Factory managers allocate personnel according to the midline schedule and maintain a smooth processing flow to maximize product quality. In areas like Bristol Bay, where millions of salmon return in a short period, processing and distribution are even more critical than catching.

Processing Procedures

Salmon transferred from the midline to the factory is stored in self-draining storage bins (totes) with ice. The salmon moved to the processing line is sorted by type, and entrails and heads are removed. Some are sold live, while the rest are assigned to canning and freezing lines based on size and quality.

Live and Frozen Salmon

Live salmon are air-freighted to the United States, Europe, Japan, and other locations, while frozen salmon are processed in mobile processing facilities or shore-based plants. Salmon is rapidly frozen using quick freezing technologies (e.g., blast freezing, contact freezing) to maintain freshness. Afterward, glazing is performed to coat the salmon with a thin layer of freshwater ice to block air contact and extend shelf life.

Quality Control and Market Distribution

Regardless of the catching method (trolling, gillnetting, purse seining), freshness is prioritized. Vacuum packaging and glazing are crucial steps for quality preservation. Thanks to this rigorous management, Alaska salmon has established itself as a high-quality seafood in the global market, with major exporting countries including the United States, Europe, and Japan.

Through innovative processing technologies and a systematic distribution structure, the Alaska salmon industry maintains its competitiveness worldwide.