Seaworthy Engineering Request a quote

Australian made since 1995

Built for the
worst of it.

Marine rigging blocks and stabiliser equipment engineered for demanding commercial conditions.

  • Individually tested and certified
  • Australian made and owned
  • Repairs and servicing available
Seaworthy Engineering 500x300 sheave lifting block, 20 tonne WLL, painted steel with shackles
500x300 sheave lifting block P/N 500x300-3212C3X4 · WLL 20 T · 300 kg
Manufacturing since
1995
Testing
Individually tested and certified
Origin
Australian made and owned
Applications
Commercial marine, trawl and mining

Product range

Blocks, stabilisers and the parts that keep them working

Featured equipment

Specifications you can compare

Working load limits, dimensions and finishes as published for each item. Every block is individually tested and certified before it leaves the workshop.

Double Gear Trawl Block 350x150-22210C3 WLL 8 T

Double Gear Trawl Block

Part no.
350x150-22210C3
WLL
8 T
Dimensions
H700 x D400 x W156 mm ID
Mass
95 kg
Material / finish
Galvanised and painted
Double Gear Trawl Block 350x15022210C3X4-12TSS WLL 12 T

Double Gear Trawl Block

Part no.
350x15022210C3X4-12TSS
WLL
12 T
Dimensions
H760 x D400 x W156 mm ID
Double Gear Cod End Rigging Block 250x170-PS WLL 6 T

Double Gear Cod End Rigging Block

Part no.
250x170-PS
WLL
6 T
Dimensions
H577 x D290 x W170 mm ID
Cod End Rigging Block 250X110NYB-PS WLL 6 T

Cod End Rigging Block

Part no.
250X110NYB-PS
WLL
6 T
Dimensions
H577 x D290 x W110 mm ID
Material / finish
Nylon sheave
Try Rigging Block 250X110SS WLL 6 T

Try Rigging Block

Part no.
250X110SS
WLL
6 T
Dimensions
H577 x D290 x W110 mm ID
Material / finish
Stainless steel
500x300 Sheave Lifting Block 500x300-3212C3X4 WLL 20 T

500x300 Sheave Lifting Block

Part no.
500x300-3212C3X4
WLL
20 T
Dimensions
H1135 x D555 x W320 mm ID
Mass
300 kg
Stirrup Rigging Block 1STB WLL 3 T

Stirrup Rigging Block

Part no.
1STB
WLL
3 T
Dimensions
H340 x D125 x W125 mm ID
Material / finish
316 grade stainless, nylon roller
Snatch Rigging Block 4SNB WLL 1.5 T

Snatch Rigging Block

Part no.
4SNB
WLL
1.5 T
Dimensions
H388 x D150 x W55 mm ID
Material / finish
316 grade stainless, nylon roller
Stabiliser Springer 6SPHD

Stabiliser Springer

Part no.
6SPHD
Dimensions
H950 x D200 x W200 mm
Mass
35 kg
Material / finish
Galvanised and painted
Note
Vessel size up to 32 m

See the full catalogue

Why it lasts

Steel that keeps working after the weather has had its go

Salt, shock loads and years of cable wear are the normal operating conditions for a trawl block. Seaworthy blocks are built and tested for exactly that.

  1. A
    Tested load

    Every block is individually tested and certified before dispatch.

  2. B
    Marine-grade construction

    316 grade stainless or galvanised steel, built for salt water.

  3. C
    Serviceable components

    Nylon roller on a pinned axle, replaceable in the workshop. Sheave assembly kits available for 500x300 and 350 series blocks. Placeholder: confirm wording.

  4. D
    Finish

    Galvanised and painted, or 316 stainless with nylon roller.

Placeholder copy is marked and needs client confirmation before launch.

Seaworthy Engineering stirrup rigging block 3STN, 316 stainless frame with nylon roller
Stirrup rigging block, P/N 3STN. 316 grade stainless with nylon roller, WLL 3 T.
Four fully reconditioned trawl blocks freshly painted and lined up on the Seaworthy Engineering workshop floor
Fully reconditioned trawl blocks, Greenfields workshop

Repairs and servicing

Worn block? Bring it in.

Seaworthy Engineering repairs and services trawl blocks and stabiliser equipment in the Mandurah workshop, and carries fully reconditioned blocks when a rebuild suits you better than new.

  • Trawl block repairs Sheaves, bearings, pins and cheek plates inspected and replaced as needed.
  • Stabiliser servicing Springers and wings checked, repaired and re-protected.
  • Reconditioned blocks Fully reconditioned units, subject to availability. Call for stock and pricing.
  • Sheave assembly kits Do the rebuild yourself with a kit matched to your block size.

Repair scope lines are placeholder copy expanding on "repairs and servicing for trawl blocks and stabiliser equipment" - confirm with Shane.

About Seaworthy Engineering

Made in Mandurah, Western Australia, since 1995

Seaworthy Engineering has been manufacturing and supplying marine-grade trawl rigging blocks to the trawl fishing, offshore marine and mining industries for nearly three decades. Every product is designed, built and tested in the Greenfields workshop.

The old site states rigging blocks "from 1 to 12 tonnes SWL", while the catalogue lists a 20 T WLL sheave lifting block. Capacity range statement withheld pending client confirmation.

Workshop
Unit 5/27 Hampton St, Greenfields WA 6210
Established
1995
Ownership
100% Australian made and owned
Industries
Trawl fishing, offshore marine, mining
If it isn't listed
Ask. Custom solutions are quoted on request.
Two 500x300 sheave lifting blocks, side and front view, built in the Seaworthy Engineering workshop in Greenfields
500x300 sheave lifting blocks, 20 T WLL, Greenfields workshop

Need a block, repair or custom solution?

Talk to Shane directly. Workshop hours Monday to Friday, 8am to 4pm WST.