KNIERIM YACHTBAU Ker 52

Construction

Hull, Deck & Superstructure Construction:

• Carbon fibre construction (combination of carbon/epoxy/Nomex and carbon/epoxy/foam).
• Extended the carbon fibre bowsprit 2.5-ft to 11.5-ft to enhance VMG off-wind sailing.
• New bottom hard-epoxy paint job (January 2023).

Keel & Rudder:

• New rudder designed to latest hydrodynamic foil shapes by Ker Yacht Design (2017).
• Keel fin with kelp cutter and 15% larger cord length to improve upwind sailing.

Official ORR Measurements:

• LOA: 52.513ft / 16.006m.
• Beam: 15.597ft / 4.754m.
• Draft: 12.313ft / 3.753m.

Machinery

Engine & Gearboxes:

• 1 x Volvo Penta D2-40F diesel, 40hp (new 2022).
• Saildrive (new 2022).

Propulsion & Steering:

• Harken pedestals.
• Carbon fibre wheels.

Electrical Systems

Voltage Systems:

• USB C charging ports for each bunk (installation May 2025).

Battery Banks:

• Victron Energy lithium battery.

Battery Chargers:

• New charging, management, and monitoring systems (2020).

Alternators:

• New larger alternator (2020).
• Balmar 230 AMP alternator (2023).

Plumbing Systems

Watermaker:

• Spectra Ventura 150 watermaker (2020).

Tankage

Fuel:

• Total fuel capacity of approx. 80 litres (21 US gallons).

Fresh Water:

• Total fresh water capacity of approx. 264 litres (75 US gallons) in portable port and starboard water bladders.

Navigation Equipment

B&G H5000 Electronic Navigation & Instrument Package (2020):

• 2 x Zeus³ 9-inch chart plotters mounted in front of each wheel. Upgraded with latest 2025 version for latest processors and reliability.
• 1 x Zeus³ 9-inch chart plotter mounted in nav station.
• H5000 CPU upgraded with latest, faster processor (2025).
• H5000 LED graphic displays (2 x in cockpit).
• H5000 Pilot Computer.
• H5000 Pilot Controller.
• 4 x 20-20 HV LED displays as data repeaters mounted on mast.
• 1 x 20-20 HV LED display as data repeater mounted below for off-watch.
• Autopilot ram and sensor (new June 2019).

Racecourse Management Optimization & Weather Routing:

• Expedition 4D navigation software with C-Map charts (licenses not included).
• Dell Latitude 5424 rugged laptop running 64-bit Windows 11.
• Maritime Mobile Service Identity (MMSI) No.: 367776750.
• Polars and sail crossover charts by Alan Andrews programmed into Expedition.
• Polars fed into the B&G 5000 system by Expedition.

Communications:

• Starlink for boats (Starlink) for high-speed near and offshore internet access (2024).
• Satellite phones:
  1. Iridium GO for 24/7 voice plus email connections (2023).
  2. Iridium 9575 Extreme sat phone (2021)
• Very high frequency (VHF) sets (VHF FCC registered call sign: WDL4731):
  1. Standard Horizon GX1850 VHF marine radio.
  2. 2 x Standard Horizon 870 w/ DSC floatable handheld VHF marine radios.

Domestic Equipment

• No refrigeration, oven, or stove.
• 2 x Jetboils for heating water.
• 10 x Titanium Sporfs.

Heads/Showers:

• Enclosed head with no on-board waste storage tank.

Accommodation

Summary of Accommodation:

• Racing layout -  sleeps 12.
• Six pipe-berths along either hull for twelve total.
• 12 x Approximately 60L volume cuddies for crew gear stowage.
• Open interior with enclosed head plus fore and aft crash bulkheads.
• Navigation station, opening ports for ventilation, storage, and open transom for reliable drainage. Upgraded with additional seat and folding workstation for more comfort (2025).
• Up to approximately 185 cm / 73-inches headroom in main cabin.

Deck Equipment

Rig:

• High modulus Hall carbon fibre mast.
• EC6 carbon fibre standing rigging (2023).
• Jib and main halyards (2024). All halyards have locks.
• Spectra running backstays (new June 2023, pending May 2025).
• Halyards routinely replaced not less than every two years.
• Three sprit tack lines (one 2:1 mid-station and two 1:1 at end of sprit).
• Headfoil2 head foil (March 2023).
• Future Fibres PBO FibreLite running backstays (installation May 2025).
• Main sail halyard lock 2025.

Winches:

• Harken winches.

Sails Inventory:

• Full North set of sails with a full suit in 2023 that is constantly refreshed.
• North 2025 - J2, R2 (fractional J0), A1.5, A2 and Inner Jib Staysail.
• 2025 J2+ (9 to 18 knots) - this is an Offshore J2 with J2 shape made with J3 strength cloth given our offshore focus. It augments the Inshore J2 delivered in January that was J2 shape with J2 rated strength cloth (8-14 knots).
• 2025 J3+ (14 to 24 knots) - rated as a Heavy Weather sail, this replaces the old J3+ (still in very good shape) with stronger cloth than a standard J3 sail to raise its upper range.
• Main Sails:
  1. OMN-1 Offshore – 2023.
  2. MN-C* Buoy Race – 2015.
  3. MN-E* Near Shore Race – 2016.

• Jibs:
  1. J0-1 (R2) Race – 2025.
  2. J0-1 Race – 2021.
  3. AP-A Training – 2021.
  4. J1-1 Race (unused) – 2023.
  5. J2-A Race – 2025.
  6. J2-D Training.
  7. J3-D Training.
  8. J4-A Race – 2015.
  9. JT-A Race.
  10. JT-B Training.
• Staysails:
  1. IJS Inner Jib Staysail – 2025
  2. BSS-1 Offshore Race – 2023.
  3. SS-1 Buoy Race – 2021.
  4. OSS-1 Offshore Race – 2023.
  5. SJS-1 Offshore Race – 2023.
  6. GS-1 Training – 2021.
  7. GS-2 Race – 2023.
• Spinnakers:
  1. A1-A Training.
  2. A1-B Race – 2024.
  3. A1.5-A Race – 2025.
  4. A1.5-B Training.
  5. A1.5-C Race – 2021.
  6. A2-A Race – 2025.
  7. A2-B Race – 2023.
  8. A2-F Training.
  9. A2.5-A Training – 2021.
  10. A2.5-B Race – 2023.
  11. A3.5-A Race – 2022.
  12. A4-A Race – 2021.
  13. A4-E Training.
  14. MH0-A* Race – 2020.
  15. FRO-A Race – 2023.
• Storm Tri Sail:
  1. Race.
• Storm Jib:
  1. Race.
• Delivery:
  1. Delivery Main MN-D – 2015.
  2. Delivery Jib.

* Older Sail w/low mileage & very good.

Anchoring & Mooring Equipment:

• Anchor, chain and rode.
• Boat hook.

Covers, Canvas & Cushions:

• Mainsail cover.
• Full boom sunshade while entertaining on a mooring or working between races.

Safety Equipment

• Safety – the boat meets the 2025 SER and World Sailing Special Regulations for Ocean Status.
• One Ocean Safety 45-RAF0400 Ultralite 12-person life raft plus ditch bag (2020).
• Emergency tiller and rudder mounted using a Laser-like gudgeon and pintail system.
• 2 x 406 MHz Emergency Position Indicating Radio Beacon (EPIRB) ARTEX OCEAN SIGNAL–RescueME EPIRB 1 (2020) – US SARSAT Beacon Registration Number: 2DCC9 4C70E FFBFF and 2DCC9 4D630 FFBFF.
• Emergency tiller & drogue (offshore races).
• Ditch bag, Jon Bouy, Lifesling-2 Overboard Rescue System, Throwable 50-foot rescue rope.
• Twelve self-inflating Spinlock 6D Personal Floatation Devices for each crewmember with harness, tether and an OceanSignal RescueME MOB1 DSC-AIS linked to the boat’s MSSI (2020).
• Twelve USCG Type-II approved life preservers stowed aft.
• Man-over-board emergency buttons next to each wheel to record MOB position on Chartplotter.
• Anchor, chain and rode.

Fire-Fighting Equipment:

• Hand held extinguishers.

Refit History