Quick Summary
The Blue Shark 2311 is a fixed double sailing block with a 57 mm sheave and a maximum line size of 7/16 in. (12 mm). It is designed as a marine block with stated SWL and breaking load figures for buyers comparing load limits and line size.
The block also lists 6061T6 aluminum alloy, 316 stainless steel hardware, and Delrin ball bearings. Those details matter if you are comparing materials and the load figures against the requirements of your rigging setup.
Key Details
| Detail | Product information and buyer relevance |
|---|---|
| Model | 2311, which helps confirm the exact block variant. |
| Product type | Fixed double aluminum sailing block for marine rigging applications. |
| Sheave size | 57 mm sheave, a key sizing point for this block. |
| Maximum line size | 7/16 in. (12 mm), so line diameter needs to match this limit. |
| Safe Working Load | 1980 lbs (900 kg), an important load figure for comparison. |
| Breaking load | 4180 lbs (1900 kg), another limit buyers may compare when choosing rigging hardware. |
| Material | 6061T6 aluminum alloy with 316 stainless steel hardware and Delrin ball bearings. |
What to Compare Before Buying
- Line size: This block is stated for line up to 7/16 in. (12 mm). Compare that limit with the rope you plan to use.
- Load figures: The listed SWL is 1980 lbs (900 kg), and the breaking load is 4180 lbs (1900 kg). Compare those figures with the demands of your setup.
- Sheave size: The 57 mm sheave is a key fit point when matching hardware for a rigging layout.
- Material details: The block uses 6061T6 aluminum alloy, 316 stainless steel hardware, and Delrin ball bearings. Compare those construction details with the environment and hardware preferences for your application.
Before You Decide
Confirm the 2311 model, the 57 mm sheave size, and the 7/16 in. (12 mm) line limit before choosing an offer. Also compare the stated SWL and breaking load with the requirements of your rigging setup.
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