C800SB2N, Zone B, Star Hand marker buoy

The Marker Guardian C800 is a buoy designed to be customizable, it can be transformed in to a cardinal buoy, indicating cardinal directions or indicating starboard or port board, thus helping the navigation near ports and other maritime traffic zones.

The high capacity allows it to be configured for water quality or other environmental parameters monitoring.

The MG C800 is fully built in composite, withstanding impacts, solar exposure, ice, salt water and corrosion exemplary. Each section is laminated using UV-stabilized, isophthalic polyester resin reinforced with Kevlar* and glass fibers to obtain maximum durability, crash resistance and water impermeability. With thicknesses ranging from 7 up to 10mm this structure is rigid durable and reliable.

The C800 performs extraordinarily and can be equipped with batteries to feed illumination systems for up to 6 months.

The fully composite structure assures a rust free, low maintenance lifespan. No part of the structure requires painting at any stage of the product’s life span. This MG can be supplied in respective I.A.L.A. colors.


Consult Specifications tab for detailed information.


Isophthalic NPG Polyester resin reinforced with Kevlar and glass fiber; 316-grade SS fixtures.

Mass (Kg | lb)

173 | 381,4

Volume (L | gal)

437 | 115,44

Reserve Buoyancy (kg | lb)

352 | 778,23

Nominal Draft (mm | in)

1325 | 52,17

H max (mm | in)

2175 | 85,63

Focal Plane Height (mm | in)

1700 | 66,93

Total Float Volume (L | gal)

315 | 83,21

Maximun Mooring Load (kg | lb)

176 | 388,01

Safe Working Load, 1pt (kg | lb)

88 | 194

Submergence  (kg/cm | lb/in)

0,27 | 0,60

Visual Area (mt| ft2) (no signs)

0,38 | 4,09

Water Area (mt| ft2)

1,8 | 19,38

Wall Thikness (mm | in)

7 | 0,28

Ballast (kg | lb)

88 | 194

Height (mm | in)

2175 | 85,63

Width (mm | in)

800 | 31,50

Available Colours


Product Life Expectancy (years) 


Intellectual Property Trademarks

Water Guardian and Marker Guardian are a registered trademark of Composite Solutions, Lda..

Quality Assurance

ISO 9001:2008

Warranty (years)


Standard Equipment

Data logger with Bluetooth connectivity with upgradability up to 32 sensors

32Gb of data storage

LCD display

Adjustable measuring time intervals

Optional Equipment

Temperature, humidity, wind & pressure Kit

Electrical conductivity, temperature & depth sensor Kit

Wi-Fi, VHF, Iridium, RF, GPRS, 3G & 4G


Dissolved Oxygen Kit

Wi-Fi, VHF, Iridium, RF, GPRS, 3G & 4G

Surveillance camera/motion sensor Kit

Solar Panels

Upgraded battery capacity

Status light