Tideland Sentinel 

Tideland SB-2.6 Sentinel Buoy

Rugged buoy with exceptional performance

The SB-2.6 is the latest addition to Tideland’s range of buoy products. The design is rugged with exceptional performance and is designed for minimal maintenance and long life. This unique design utilises the latest materials in float construction.

  • Tech Specs
  • Float Sections & Hull Frame
  • Top Superstructure
  • Options
  • Documents


Diameter - 2600mm 

Foam Filling - 32kg/m3

Tower Height - 3100mm

Nominal Freeboard - 914mm

 - 1641mm
Nominal Focal Plane Height - 4500mm (5419mm with Racon)
Hull Construction
 - HDPE Core with stainless steel mooring eyes
Float Construction - Rotationally moulded MDPE polyethylene, 18mm thick
Tower Construction - MDPE Polyethylene
Visual Area - 4m2 without Day Mark Wings

Air Weight - 2457kg
Submergence - 38.4kg/cm
Radar Reflector - 10m2 (X-band)
 - All IALA colours available (Guideline E108)
Maximum Mooring Load - 5,163lbs (2,342kg)
Maximum Current - Up to 7 Knots

Tough MDPE Float Sections

Medium Density Polyethylene (MDPE) float sections (Quantity 4) form the heart of the buoy. Colour pigment is compounded into virgin polyethylene which is further enhanced by Tideland’s unique, UV15 stabiliser.

Results are outstanding in terms of colour retention and physical strength that resists damage. Unique mould design and controlled manufacturing process ensure a homogeneous profile with an increased thickness in high stress areas. This polyethylene also assists in repelling marine growth. 

High Density Hull Frame

The Hull Frame is manufactured from HDPE Pipe and is fitted with two lifting eyes and two mooring eyes manufactured in 316 Stainless Steel.

The design allows each of the hull sections to be easily fitted and quickly replaced if damaged. As an option, the hull frame can be equipped with zinc anodes. 

The Top Superstructure comprises several options including; 

  • Complete polyethylene tower in two or three sections
  • Internal radar reflector in top section
  • Removable ladder rated for over 200kgs
  • Optional nameplates
  • Optional aluminium or polyethylene topmark
  • Optional polyethylene daymark panels to improve day time visibility

On the top section space is reserved for mounting additional solar panels. As optional, battery boxes can be fitted in the base bottom section accessible through an optional lockable hatch. Options include painting the superstructure to match hull float sections for safe water or new danger marks. The superstructure can be removed from the core for maintenance purposes. 

Options include day marks, top marks, solar panels, battery box and battery pack, AIS AtoN, racon,along with a buoy monitoring system utilising VHF, GSM, or satellite communication links.