TERAC - Up to 80% faster deck straightening
The Terac is an induction heating system used to straighten steel decks and bulkheads in shipyards. It replaces flame heating with faster, safer, single-sided heating and no gas or fumes. A proven solution for deck and bulkhead straightening, Terac has been used in shipyards worldwide since 1981.
What is the Terac deck straightening system?
The Terac uses electromagnetic induction to heat steel from the inside out. It operates from a single side of the plate, with no gas, no open flame, and no combustion fumes. Heating is rapid, precise, and automatically stops when the steel reaches the Curie temperature, making it impossible to overheat magnetic steel.
The system is containerised for easy movement between vessels or work sites. A standard working radius of 45 metres from the base unit (extendable to 60 m) means one unit can serve a large section of a vessel without repositioning.
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Straightening time reduction |
Up to 80% |
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Heating time (8 mm deck) |
~8 seconds |
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Standard working radius |
45 m |
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Extended working radius |
60 m (optional) |
| Operator training time | ~2 hours |
| Operation | Single-sided, no flames |
ENRX Terac systems are specially designed for ship straightening. Each Terac includes a frequency converter, cooling system, operator panel and deck-heating unit.
What is induction deck straightening?
Why shipyards choose induction over flame heating
Compared to traditional gas-flame methods, the Terac delivers measurable improvements across productivity, operating cost, safety, and environmental impact.
Induction vs flame deck straightening
- Up to 80% faster than flame heating
- No open flame or gas supply
- Single-sided operation
- No toxic combustion fumes
Enhanced productivity
The Terac is up to 80% faster than flame heating. It heats an 8 mm steel deck in approximately 8 seconds. Single-sided operation eliminates the need for access below the plate.
- Rapid, consistent through-heating
- Precise, repeatable results every time
- Controls on the handle — minimal setup
- ~2 hours to train a new operator
Lower operating costs
The Terac cuts labour costs by reducing straightening time and crew size. No gas supply, no fire watch, and minimal setup mean fewer resources spent per job and shorter overall project timelines.
- Up to 80% less straightening time
- No gas cylinder logistics or costs
- Minimal downtime between jobs
- Lower insurance risk — no open flame
Safer, cleaner work environment
The Terac operates without combustion. No toxic fumes, no open flame, and significantly reduced noise compared to gas burners. The automatic Curie-point shutoff prevents steel overheating.
- No combustion gases or toxic emissions
- No fire risk — no flame watch required
- Quieter operation than gas equipment
- Failsafe — cannot overheat magnetic steel
Where and how Terac is used
The Terac is designed for structural steel straightening in shipbuilding and ship repair. Its containerised base unit and long cable reach make it practical across a wide range of shipyard scenarios.
Hull and main deck straightening
Vertical bulkhead straightening
Hard-to-reach and overhead sections
Multi-vessel and multi-site operation
How induction straightening works
The Terac is a straightforward system to operate. Most new operators are productive within approximately two hours of training. The four-step process applies to both deck and bulkhead applications.
Position the inductor
Set power and timing
Heat the steel
Straighten and cool
TERAC 25/40 — full specifications
Subject to modification. Contact ENRX for current technical documentation and application-specific guidance.
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Power supply |
Base unit enclosure |
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Supply voltage |
3×400 V ±10% (460 V) |
Ambient operating temp. |
+5°C to +40°C |
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Frequency |
50 Hz / (60 Hz) |
Outer dimensions (W×D×H) |
1965 × 1980 × 1925 mm |
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Power factor (cos φ) |
0.95 |
Weight (with water) |
~1,240 kg |
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Recommended fuse |
63 A |
Capacitor / extension unit |
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Output |
Outer dimensions (W×D×H) |
570 × 858 × 300 mm |
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Output power (nominal / intermittent) |
25 / 40 kW |
Weight |
~36 kg (excl. cable) |
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Cooling & power cable length |
30 m |
Extended working radius |
60 m |
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Cooling |
Inductor units |
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Refrigerant type |
R407C |
Deck inductor weight |
~10 kg (excl. cable) |
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Coolant |
Mains water (30% monopropylene glycol when risk of freezing) |
Deck inductor cable length |
15 m |
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Handheld unit weight |
~2 kg (excl. cable) |
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Handheld unit cable length |
10 m |
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Standard working radius |
45 m |
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Specifications subject to modification without notice. |
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Common questions about the Terac system
Answers to the questions buyers, engineers, and procurement teams most often ask about the ENRX Terac© 25/40.
Insights and resources
Download brochures and expert materials on induction heating technologies and their industrial applications.
ENRX TERAC 25/40 | Induction heating system for faster deck and bulkhead straightening in shipyards
The ENRX TERAC 25/40 induction heating system delivers up to 80% faster deck and bulkhead straightening compared to traditional flame heating. Designed for shipyards, it offers single-sided operation, no harmful emissions, and a 45–60m work radius — all in a portable, container-ready unit.
Induction heating applications | Processes, equipment and benefits
Discover how ENRX induction heating improves efficiency, precision, and sustainability across industrial applications — from brazing and bonding to forging and annealing. Learn about the processes, equipment, and benefits of modern induction technology.
Solutions explained
Customer stories and experience
Real-world projects, proven solutions, and industrial expertise in action
How shipyards are using Terac to correct weld distortion
Shipyards are rapidly shifting toward induction-based deck and bulkhead straightening to improve safety, efficiency, and precision. Terac, developed by ENRX, is increasingly becoming the preferred solution for correcting steel distortion in modern shipbuilding and offshore fabrication.
How Fincantieri cut deck straightening time by up to 80%
Fincantieri, one of the world's largest shipbuilders, replaced flame heating with ENRX induction technology across two Italian shipyards — with dramatic results for speed, safety, and operating cost.
Image gallery
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ENRX Terac systems are specially designed for ship straightening. Each Terac includes a frequency converter, cooling system, operator panel and deck-heating unit.
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Terac components are designed and built to last in tough shipyard environments.
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Note the easy-to-use controls placed on the handle. It usually takes only a couple of hours to train an operator to use the Terac system.
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Induction heating is widely used to straighten ship decks and bulkheads.
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An ENRX Terac system ensures failsafe operation—it makes it impossible to overheat magnetic steel.
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Terac works just as well on bulkheads and other vertical structures as it does on decks.
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For added ergonomic comfort, the handheld transformer can be attached to a balancer and suspended from a magnet or wire rope.
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Operators can work with Terac within a 45m radius of the base unit. An optional extension unit lengthens the work area to 60m radius.
