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AtoN House Nordic

Sector lights

Sector lights and PEL for defined navigation sectors

Sector lights display different colours over defined horizontal sectors to indicate the relationship between a vessel and the charted approach. Vikingegaarden specifies, supplies, installs and commissions MSM sector lights and Tideland Signal port entry lights, with Emiko monitoring where supported.

  • MSM MBL 400S and MEL250L/MEL500L
  • Tideland Signal TSL-100 PEL
  • Sector boundaries specified from the marking plan

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An MBL 400S LED sector light marks the harbour approach with red, white and green sectors at dusk.
AtoN House NordicExplore this division
MBL 400S nominal range (T=0.74)
Up to 12 NM
TSL-100 maximum luminous intensity
600,000 cd
MEL boundary accuracy
Better than 0.05°

Key features

Sector geometry and optical performance

Sector bearings, colours and required range are specified for the approach. Optical accuracy and mounting stability are assessed together.

Defined colour sectors

The marking plan establishes the colour and bearing of each sector boundary. Red, white and green sectors must be interpreted using the published arrangement for the site.

Model-specific accuracy

MSM publishes 0.5° sector accuracy for the MBL 400S and boundary accuracy better than 0.05° for the MEL port entry lights. These values describe different optical configurations and must be checked against the required sector layout.

Luminous intensity and range

Nominal range is assessed at atmospheric transmissivity T=0.74. Luminous intensity, colour, background lighting and observer height are included in the optical assessment.

Power and monitoring

The electrical design includes light output, operating character and required backup autonomy. Emiko status and alarm functions are confirmed for the selected equipment and interface.

Specification

Sector layout and commissioning

The surveyed approach defines the sector layout. Installation and acceptance checks verify the boundary bearings and coverage.

Vikingegaarden specifies the optical configuration from the marking plan, required range and available mounting position. The installation includes alignment, power verification and documentation of the commissioned sector boundaries.

  1. The marking plan defines sector bearings and colours.

  2. The optical assessment confirms range, intensity and boundary accuracy.

  3. The installation specification defines mounting, power and monitoring.

  4. Commissioning documents alignment and the observed sector boundaries.

Models

Sector lights and installed reference

MSM MBL 400S

MSM manufactures the MBL 400S LED sector light with independently adjustable sector light levels. Its published nominal range is up to 12 NM at T=0.74.

  • Sector accuracy: 0.5°
  • Vertical divergence: 5°
  • IP67
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The red and white lattice mast at Gjögur Lighthouse in the Westfjords, carrying the ODSL HI sector light.

Sabik ODSL HI

Vikingegaarden installed the Sabik ODSL HI sector light at Gjögur Lighthouse in Iceland. The documented installation uses a 24 m mast and reports a range up to 14 NM; these are reference-project values.

  • Installed reference: Gjögur Lighthouse, Iceland
  • Reported site range: up to 14 NM
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Tideland Signal TSL-100 PEL

The TSL-100 is a projector-type port entry light with published luminous intensity up to 600,000 cd. The optical configuration is selected for the required approach coverage.

  • Divergence options: 3.5°, 10° or 20°
  • 256 flash codes; GPS synchronisation
  • Nominal range: on request by configuration
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MSM MEL250L and MEL500L

The MEL250L and MEL500L are precision port entry lights from MSM. Published boundary accuracy is better than 0.05°, with an oscillating boundary option.

  • Boundary accuracy: better than 0.05°
  • Oscillating boundary available
  • Intensity, power and range: on request by model
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Technical questions

Frequently asked questions about Sector lights

How are sector colours and boundaries specified?

The marking plan establishes the colour and bearing of each sector boundary. Red, white and green sectors must be interpreted using the published arrangement for the site.

Which nominal range is available?

The MBL 400S is published at up to 12 NM at T=0.74. Other models require confirmation by colour and optical configuration; the Gjögur ODSL HI figure is a reported project value.

What defines the power budget?

The electrical design includes light output, operating character and required backup autonomy. Emiko status and alarm functions are confirmed for the selected equipment and interface.

What is required for a sector light quotation?

The enquiry requires surveyed sector bearings, colours, nominal range, mounting height and available power. The responsible authority should identify the marking and acceptance requirements.

Technical enquiries and project specifications

Contact Vikingegaarden