Superyacht Design / Exterior Design / Masts, Radar & Technical Integration

Guide

Integrating Radar Masts with Sundecks, Skylights and Hardtops

Radar masts often share the highest deck with guest lounges, hardtops and skylights. Their supports and equipment need sufficient technical space without disrupting views, daylight or the architectural quality of the sundeck below.

Published: Aug. 10, 2026

Last verified: Aug. 10, 2026

The sundeck roof is both guest architecture and technical territory

The highest hardtop may need to provide shade and daylight for guests while also supporting radar and communications equipment. These roles can compete for the same limited area. Exterior design should coordinate the mast and hardtop from the beginning rather than allowing one to compromise the other later.

Skylights create both opportunity and constraint

Roof glazing can bring daylight into a sheltered lounge and make a hardtop feel visually lighter. A mast support placed carelessly through that composition can undermine the effect. Support geometry may instead bridge or frame glazed areas while preserving the intended daylight.

The mast base should not dominate the guest deck

A large technical trunk can consume valuable floor area and become an intrusive object within a lounge. Integrating supports with bars, walls or architectural edges can make the required volume feel more purposeful while still preserving access for technical functions.

Radar position influences mast height

Radar equipment normally benefits from an elevated position with an appropriate operating environment, but exterior designers should not decide that height independently. The resulting mast should be reviewed against the yacht's full profile so technical elevation does not create awkward proportions.

Hardtop edges and mast supports should share a visual language

Straight hardtop geometry can be paired with crisp structural supports, while a flowing roof may benefit from more sculpted mast legs. Repeating radii, angles and surface treatments helps several technical and architectural elements read as one system.

Guest views should remain part of the layout

The sundeck often provides some of the yacht's best long-range views. Mast supports should avoid unnecessarily blocking principal seating directions or the horizon. Technical equipment cannot always disappear, but its placement can respect the view corridors guests use most.

Equipment density should be concentrated deliberately

Radar scanners, antennas and lights spread across a wide roof can make the deck look technically busy. Concentrating equipment around a coherent mast structure can leave larger portions of the hardtop visually quiet and preserve the clean lines of the guest architecture.

Access should not require dismantling the guest space

Technical equipment needs inspection and replacement during the yacht's life. Exterior design should leave realistic service routes and access panels without forcing crew to remove major furniture or decorative elements for routine work.

Lighting should integrate with the mast structure

The mast and hardtop remain visible after dark and may also carry required technical lighting. Architectural illumination should avoid glare and unnecessary visual competition with navigation equipment while allowing the mast to remain part of the night-time exterior composition.

Successful integration allows both roles to remain clear

The mast should function as technical infrastructure while the sundeck remains a refined guest destination. Neither role needs to disguise the other. A disciplined relationship between supports, glazing, roof form and equipment can make the two functions coexist convincingly.

Sources and verification

Primary source: Feadship — Project 823

  • Feadship Project 823 — documents a radar mast engineered to span glass skylights in the sundeck hardtop while using flat-panel satellite hardware.
  • Feadship Project 822 — provides a further built-project example in which the mast is treated as a stylised part of the top-deck exterior.

This guide focuses on exterior spatial integration. Radar horizon, electromagnetic compatibility, antenna separation, structure, vibration and technical service access require specialist engineering and equipment-manufacturer input.