Marine Offshore Cables & Accessories – Fire Resistant Cables
➡ See also: Cable Glands | Hazardous Area Flameproof & Explosion Proof
| Helkama Cables Part Number | Instrumentation Cable Description | Cable Type |
| RFA-FRHF | Fire resistant, collectively screened instrumentation and communication cable with SHF1 or SHF2 sheath for fixed installation 250V FRHF |  |
| RFA-FRHF(i) | Fire resistant, pair- and collectively screened instrumentation and communication cable with SHF1 or SHF2 sheath 250V FRHF |  |
| RFE-FRHF | Fire resistant, armoured instrumentation and communication cable with SHF1 or SHF2 sheath 250V FRHF |  |
| RFE-FRHF(i) | Fire resistant, pair screened, armoured instrumentation and communication cable with SHF1 or SHF2 sheath 250V FRHF |  |
| RFE-EMC-FRHF | Fire resistant, armoured instrumentation and communication cable with improved EMC screening and SHF1 or SHF2 sheath 250V EMC-FRHF |  |
| RFE-EMC-FRHF(i) | Fire resistant, pair screened, armoured instrumentation and communication cable with improved EMC screening and SHF1 or SHF2 sheath 250V EMC-FRHF |  |
| LKM-FRHF | Fire resistant, unarmoured control and instrumentation cable with SHF1 or SHF2 sheath 250V FRHF |  |
| LKAM-FRHF | Fire resistant, screened control and instrumentation cable with SHF1 or SHF2 sheath 250V FRHF |  |
| LKSM-FRHF | Fire resistant, armoured control and instrumentation cable with SHF1 or SHF2 sheath 250V FRHF |  |
| LKM-FRHF | Fire resistant, unarmoured control and power cable with SHF1 or SHF2 sheath 0,6/1kV FRHF |  |
| LKAM-FRHF | Fire resistant, screened control and power cable with SHF1 or SHF2 sheath 0,6/1kV FRHF |  |
| LKSM-FRHF | Fire resistant, armoured control and power cable with SHF1 or SHF2 sheath 0,6/1kV FRHF |  |
| LKMM-FRHF | Fire resistant, unarmoured control and power cable with extruded filler and SHF1 or SHF2 sheath 0,6/1kV FRHF |  |
| LKMSM-FRHF | Fire resistant, armoured control and power cable with soft extruded filler and SHF1 or SHF2 sheath 0,6/1kV FRHF |  |
| LKSM-EMC-FRHF | Fire resistant, armoured power and control cable with improved EMC screening and SHF1 or SHF2 sheath 0,6/1kV EMC-FRHF |  |
Developing & Manufacturing Offshore & Marine Cables For Over 50 Years
THORNE & DERRICK are international distributors of LV, MV & HV Offshore & Marine Cable Installation, Jointing, Substation, Earthing & Electrical Equipment – we supply Joints, Glands, Cleats & Cable Accessories specified for use in harsh and hazardous areas to support the installation of marine and offshore fire resistant cables.
Since 1985, T&D have established an international reputation based on SERVICE | INTEGRITY | TRUST.
DNV is a rigorous approval system for cable accessories including joints, glands and cleats – the DNV approval process assesses all of the evidence offered by the manufacturer and compares it to the requirements of the international standard, IEC61914. Once full compliance is proven DNV Type Approval is offered.
DNV Approved
Hydrocarbon Resistant | Zero Halogen & Fire Resistant
Hazardous Area Explosion Proof | Zero Halogen
Zero Halogen | Fire Resistant | Stainless Steel
Also ➡ Cable Labels, Cable Ties, Cable Transits and Cold Shrink
Contact Thorne & Derrick for further information and customer service – extensive range of DNV Approved Marine & Offshore Cables & Cable Accessories available for delivery to UK and international projects.
LV MV HV – 3.3kV 6.6kV 11kV 33kV
T&D ⇒ CABLE ♦ JOINT ♦ TERMINATE ♦ CONNECT ♦ GLAND ♦ CLEAT ♦ CRIMP ♦ DUCT ♦ SEAL ♦ REPAIR
T&D are Specialist Distributors to UK Distribution Network Operators (DNO’s), NERS Registered Service Providers, ICP’s and HV Jointing Contractors of an extensive range of LV, MV & HV Jointing, Earthing, Substation & Electrical Eqpt – this includes 11kV/33kV/66kV cable joints, terminations and connectors for both DNO and private network applications.
Specialists Distributors of Cable Sealing Systems from leading manufacturers including: Hauff Technik | Roxtec | CSD | Filoseal
Contact our UK Power Team for competitive quotations, fast delivery from stock and technical support or training on all LV-HV products.
Key Product Categories: Duct Seals | Cable Cleats | Cable Glands | Electrical Safety | Arc Flash Protection | Cable Jointing Tools | Cable Pulling | Earthing | Feeder Pillars | Cable Joints LV | Joints & Terminations MV HV
Marine Offshore Cables & Accessories – Heat Resistant Cables
➡ See also: Cable Glands | Hazardous Area Flameproof & Explosion Proof
| Helkama Cables Part Number | Instrumentation Cable Description | Cable Type |
| LKSM-SHF2 120°C (0,6/1kV) | Heat and oil resistant armoured power and control cable 0,6/1kV |  |
| LKSM-SHF2 120°C (250V) | Heat and oil resistant armoured control and instrumentation cable |  |
| RFE-SHF2 120°C (250V) | Heat and oil resistant armoured pair instrumentation and communication cable |  |
| RFE-SHF2(i) 120°C (250V) | Armoured and individually screened instrumentation and communication cable 250V |  |
Developing & Manufacturing Offshore & Marine Cables For Over 50 Years
THORNE & DERRICK are international distributors of LV, MV & HV Offshore & Marine Cable Installation, Jointing, Substation, Earthing & Electrical Equipment – we supply Joints, Glands, Cleats & Cable Accessories specified for use in harsh and hazardous areas to support the installation of marine and offshore heat resistant cables.
Since 1985, T&D have established an international reputation based on SERVICE | INTEGRITY | TRUST.
DNV is a rigorous approval system for cable accessories including joints, glands and cleats – the DNV approval process assesses all of the evidence offered by the manufacturer and compares it to the requirements of the international standard, IEC61914. Once full compliance is proven DNV Type Approval is offered.
DNV Approved
Hydrocarbon Resistant | Zero Halogen & Fire Resistant
Hazardous Area Explosion Proof | Zero Halogen
Zero Halogen | Fire Resistant | Stainless Steel
Also ➡ Cable Labels, Cable Ties, Cable Transits and Cold Shrink
Contact Thorne & Derrick for further information and customer service – extensive range of DNV Approved Marine & Offshore Cables & Cable Accessories available for delivery to UK and international projects.
LV MV HV – 3.3kV 6.6kV 11kV 33kV
T&D ⇒ CABLE ♦ JOINT ♦ TERMINATE ♦ CONNECT ♦ GLAND ♦ CLEAT ♦ CRIMP ♦ DUCT ♦ SEAL ♦ REPAIR
T&D are Specialist Distributors to UK Distribution Network Operators (DNO’s), NERS Registered Service Providers, ICP’s and HV Jointing Contractors of an extensive range of LV, MV & HV Jointing, Earthing, Substation & Electrical Eqpt – this includes 11kV/33kV/66kV cable joints, terminations and connectors for both DNO and private network applications.
Specialists Distributors of Cable Sealing Systems from leading manufacturers including: Hauff Technik | Roxtec | CSD | Filoseal
Contact our UK Power Team for competitive quotations, fast delivery from stock and technical support or training on all LV-HV products.
Key Product Categories: Duct Seals | Cable Cleats | Cable Glands | Electrical Safety | Arc Flash Protection | Cable Jointing Tools | Cable Pulling | Earthing | Feeder Pillars | Cable Joints LV | Joints & Terminations MV HV
Marine Offshore Cables & Accessories – Fire & Water Resistant Cables
➡ See also: Cable Glands | Hazardous Area Flameproof & Explosion Proof
| Helkama Cables Part Number | Instrumentation Cable Description | Cable Type |
| RFA-FRHF+WSR/ WJR | ScFire and Water Spray/Jet Resistant, collectively screened instrumentation and communication cable for critical systems 250V FRHF+WJR |  |
| RFA-FRHF(i)+WSR/ WJR | Fire and Water Spray/Jet Resistant, coll. and indiv. screened instrumentation and communication cable for critical systems 250V FRHF+WJR |  |
| RFE-FRHF+WSR/ WJR | Fire and Water Spray/Jet Resistant, armoured instrumentation and communication cable for critical systems 250V FRHF+WJR |  |
| RFE-FRHF(i)+WSR/ WJR | Fire and Water Spray/Jet Resistant, armoured and indiv. screened instrumentation and communication cable for critical systems 250V FRHF+WJR |  |
| LKM-FRHF+WSR/ WJR | Fire and Water Spray/Jet Resistant, unarmoured control and power cable for critical systems 1kV FRHF+WJR |  |
| LKSM-FRHF+WSR/ WJR | Fire and Water Spray/Jet Resistant, copper wire braid armoured control and power cable for critical systems 1kV FRHF+WJR |  |
Developing & Manufacturing Offshore & Marine Cables For Over 50 Years
THORNE & DERRICK are international distributors of LV, MV & HV Offshore & Marine Cable Installation, Jointing, Substation, Earthing & Electrical Equipment – we supply Joints, Glands, Cleats & Cable Accessories specified for use in harsh and hazardous areas to support the installation of marine and offshore fire and water resistant cables.
Since 1985, T&D have established an international reputation based on SERVICE | INTEGRITY | TRUST.
DNV is a rigorous approval system for cable accessories including joints, glands and cleats – the DNV approval process assesses all of the evidence offered by the manufacturer and compares it to the requirements of the international standard, IEC61914. Once full compliance is proven DNV Type Approval is offered.
DNV Approved
Hydrocarbon Resistant | Zero Halogen & Fire Resistant
Hazardous Area Explosion Proof | Zero Halogen
Zero Halogen | Fire Resistant | Stainless Steel
Also ➡ Cable Labels, Cable Ties, Cable Transits and Cold Shrink
Contact Thorne & Derrick for further information and customer service – extensive range of DNV Approved Marine & Offshore Cables & Cable Accessories available for delivery to UK and international projects.
LV MV HV – 3.3kV 6.6kV 11kV 33kV
T&D ⇒ CABLE ♦ JOINT ♦ TERMINATE ♦ CONNECT ♦ GLAND ♦ CLEAT ♦ CRIMP ♦ DUCT ♦ SEAL ♦ REPAIR
T&D are Specialist Distributors to UK Distribution Network Operators (DNO’s), NERS Registered Service Providers, ICP’s and HV Jointing Contractors of an extensive range of LV, MV & HV Jointing, Earthing, Substation & Electrical Eqpt – this includes 11kV/33kV/66kV cable joints, terminations and connectors for both DNO and private network applications.
Specialists Distributors of Cable Sealing Systems from leading manufacturers including: Hauff Technik | Roxtec | CSD | Filoseal
Contact our UK Power Team for competitive quotations, fast delivery from stock and technical support or training on all LV-HV products.
Key Product Categories: Duct Seals | Cable Cleats | Cable Glands | Electrical Safety | Arc Flash Protection | Cable Jointing Tools | Cable Pulling | Earthing | Feeder Pillars | Cable Joints LV | Joints & Terminations MV HV
Marine Offshore Cables & Accessories – EMC & VFD Cables
➡ See also: Cable Glands | Hazardous Area Flameproof & Explosion Proof
| Helkama Cables Part Number | Instrumentation Cable Description | Cable Type |
| LKSM-EMC | Armoured power and control cable with improved EMC screening and with SHF1 or SHF2 sheath 0,6/1kV EMC |  |
| LKSM-VFD | Armoured power cable with improved EMC screening for Variable Frequency Drive Systems with SHF1 or SHF2 sheath 1,8/3kV VFD |  |
| LKSM-EMC-FRHF | Fire resistant, armoured power and control cable with improved EMC screening and SHF1 or SHF2 sheath 0,6/1kV EMC-FRHF |  |
| RFE-EMC | Armoured instrumentation and communication cable with improved EMC screening and with SHF1 or SHF2 sheath, for fixed installation 250V EMC |  |
| RFE-EMC(i) | Armoured and pair screened instrumentation and communication cable with improved EMC screening and with SHF1 or SHF2 sheath 250V EMC |  |
Developing & Manufacturing Offshore & Marine Cables For Over 50 Years
THORNE & DERRICK are international distributors of LV, MV & HV Offshore & Marine Cable Installation, Jointing, Substation, Earthing & Electrical Equipment – we supply Joints, Glands, Cleats & Cable Accessories specified for use in harsh and hazardous areas to support the installation of marine and offshore EMC and VFD cables.
Since 1985, T&D have established an international reputation based on SERVICE | INTEGRITY | TRUST.
DNV is a rigorous approval system for cable accessories including joints, glands and cleats – the DNV approval process assesses all of the evidence offered by the manufacturer and compares it to the requirements of the international standard, IEC61914. Once full compliance is proven DNV Type Approval is offered.
DNV Approved
Hydrocarbon Resistant | Zero Halogen & Fire Resistant
Hazardous Area Explosion Proof | Zero Halogen
Zero Halogen | Fire Resistant | Stainless Steel
Also ➡ Cable Labels, Cable Ties, Cable Transits and Cold Shrink
Contact Thorne & Derrick for further information and customer service – extensive range of DNV Approved Marine & Offshore Cables & Cable Accessories available for delivery to UK and international projects.
LV MV HV – 3.3kV 6.6kV 11kV 33kV
T&D ⇒ CABLE ♦ JOINT ♦ TERMINATE ♦ CONNECT ♦ GLAND ♦ CLEAT ♦ CRIMP ♦ DUCT ♦ SEAL ♦ REPAIR
T&D are Specialist Distributors to UK Distribution Network Operators (DNO’s), NERS Registered Service Providers, ICP’s and HV Jointing Contractors of an extensive range of LV, MV & HV Jointing, Earthing, Substation & Electrical Eqpt – this includes 11kV/33kV/66kV cable joints, terminations and connectors for both DNO and private network applications.
Specialists Distributors of Cable Sealing Systems from leading manufacturers including: Hauff Technik | Roxtec | CSD | Filoseal
Contact our UK Power Team for competitive quotations, fast delivery from stock and technical support or training on all LV-HV products.
Key Product Categories: Duct Seals | Cable Cleats | Cable Glands | Electrical Safety | Arc Flash Protection | Cable Jointing Tools | Cable Pulling | Earthing | Feeder Pillars | Cable Joints LV | Joints & Terminations MV HV
Marine Offshore Cables & Accessories – Power Cables
➡ See also: Cable Glands | Hazardous Area Flameproof & Explosion Proof
| Helkama Cables Part Number | Power Cable Description | Cable Type |
| LKM-HF | Unarmoured power and control cable with SHF1 or SHF2 sheath 0,6/1kV |  |
| LKAM-HF | Screened power and control cable with SHF1 or SHF2 sheath 0,6/1kV |  |
| LKSM-HF | Armoured power and control cable with SHF1 or SHF2 sheath 0,6/1kV |  |
| LKMM-HF | Unarmoured power cable with extruded filler and SHF1 or SHF2 sheath 0,6/1kV |  |
| LKMSM-HF | Armoured power cable with extruded filler and with SHF1 or SHF2 sheath 0,6/1kV |  |
| LKSM-EMC | Armoured power and control cable with improved EMC screening and with SHF1 or SHF2 sheath 0,6/1kV EMC |  |
| LKSM-VFD | Armoured power cable for Variable Frequency Drive Systems with improved EMC screening and with SHF1 or SHF2 sheath 1,8/3kV VFD |  |
| LKEM-HF | For fixed wiring in switchboards, control panels and other enclosures 0,6/1kV |  |
Developing & Manufacturing Offshore & Marine Cables For Over 50 Years
THORNE & DERRICK are international distributors of LV, MV & HV Offshore & Marine Cable Installation, Jointing, Substation, Earthing & Electrical Equipment – we supply Joints, Glands, Cleats & Cable Accessories specified for use in harsh and hazardous areas to support the installation of marine and offshore power cables including DNV Approved cable ties.
Since 1985, T&D have established an international reputation based on SERVICE | INTEGRITY | TRUST.
DNV is a rigorous approval system for cable accessories including joints, glands and cleats – the DNV approval process assesses all of the evidence offered by the manufacturer and compares it to the requirements of the international standard, IEC61914. Once full compliance is proven DNV Type Approval is offered.
DNV Approved
Hydrocarbon Resistant | Zero Halogen & Fire Resistant
Hazardous Area Explosion Proof | Zero Halogen
Zero Halogen | Fire Resistant | Stainless Steel
Also ➡ Cable Labels, Cable Ties, Cable Transits and Cold Shrink
Contact Thorne & Derrick for further information and customer service – extensive range of DNV Approved Marine & Offshore Cables & Cable Accessories available for delivery to UK and international projects.
LV MV HV – 3.3kV 6.6kV 11kV 33kV
T&D ⇒ CABLE ♦ JOINT ♦ TERMINATE ♦ CONNECT ♦ GLAND ♦ CLEAT ♦ CRIMP ♦ DUCT ♦ SEAL ♦ REPAIR
T&D are Specialist Distributors to UK Distribution Network Operators (DNO’s), NERS Registered Service Providers, ICP’s and HV Jointing Contractors of an extensive range of LV, MV & HV Jointing, Earthing, Substation & Electrical Eqpt – this includes 11kV/33kV/66kV cable joints, terminations and connectors for both DNO and private network applications.
Specialists Distributors of Cable Sealing Systems from leading manufacturers including: Hauff Technik | Roxtec | CSD | Filoseal
Contact our UK Power Team for competitive quotations, fast delivery from stock and technical support or training on all LV-HV products.
Key Product Categories: Duct Seals | Cable Cleats | Cable Glands | Electrical Safety | Arc Flash Protection | Cable Jointing Tools | Cable Pulling | Earthing | Feeder Pillars | Cable Joints LV | Joints & Terminations MV HV
Published 09 Jan 2026
We’d like to welcome our newest addition to the Thorne and Derrick team! Eva will be joining us as a content creator apprentice at our office in Chester-Le-Street. Eva will bring fresh new ideas to all of our social...
Published 09 Jan 2026
Insulating Matting Recommendations and Guidance for Electrical Safety Guest Blog From COBA Electrical safety is non-negotiable, especially when working around live switchgear, high-voltage panels, and electrical distribution equipment. One critical but sometimes overlooked safeguard is electrical insulating matting, designed...
