Tokyo Keiki HB-165A-S Magnetic Compass Bowl (165 mm Card)

Manufacturer	Tokyo Keiki Inc. (formerly Tokimec), Japan
Model	HB-165A-S (marked on the bezel)
Product Type	Magnetic Compass Bowl, 165 mm compass card
Type Approval No.	4294 (Japanese Government type approval)
Serial No.	N10872 (nameplate and bezel)
Date	2022.10 (as read on the nameplate; partly obscured in the close-up photo)
Country of Manufacture	Japan
Power Rating	Not clearly visible in the supplied photograph
Condition	Refurbished
Supplier	SM MARINE SERVICE™, Chattogram, Bangladesh

Product Introduction

The Tokyo Keiki HB-165A-S is a 165 mm liquid-filled magnetic compass bowl from Tokyo Keiki Inc., Japan. It is the heart of the ship's standard or steering magnetic compass, the mandatory backup heading reference on every SOLAS vessel. SM MARINE SERVICE™ supplies refurbished Tokyo Keiki compass bowls and magnetic compass spare parts to ship owners, ship managers and service companies worldwide. Visit https://www.smmarineservice.com/ for more navigation and communication equipment.

What Is This Equipment?

A magnetic compass bowl contains a floating compass card with magnets, immersed in damping liquid and mounted in gimbals. It is installed in the binnacle (compass stand) on the compass deck. The card image is shown to the helmsman through a reflector tube, or the heading is transmitted electrically to a remote display. Because it needs no power to show heading, the magnetic compass remains a SOLAS requirement even on ships with gyro compasses.

Main Features

• 165 mm compass card with clear 0–360° graduation
• Liquid-filled bowl for stable, damped card movement
• Gimbal mounting for use in rough seas
• Card illumination for night use
• Compatible with Tokyo Keiki SH-165A series binnacles
• Japanese Government type approval No. 4294
• Made in Japan

Tokyo Keiki HB-165A-S Magnetic Compass Bowl, serial N10872 – refurbished, SM MARINE SERVICE™

Main Technical Specifications

Compass Card Diameter	165 mm
Bowl Type	Liquid-filled magnetic compass bowl with gimbal pins
Bezel / Lubber Ring	Black bezel with 0–360° azimuth graduation
Compass Bowl Weight	Approx. 11.3 kg (Tokyo Keiki brochure for the HB-165A-5 bowl of the SH-165A2 system; HB-165A-S not verified)
Card Lighting	Under-lamp illumination, DC 24 V (system lighting per brochure)
Standards (system)	IMO A.382(X), ISO 25862, MED (Wheelmark), Japanese Government Certificate No. 4294
Compatible System	Tokyo Keiki SH-165A series magnetic compass (reflector or remote display type)

System data are taken from the Tokyo Keiki SH-165A2 brochure; values for the HB-165A-S version are not verified. Always check your unit nameplate.

Inside the Unit: PCBs, Modules & Part Numbers

The HB-165A-S compass bowl is a mechanical and optical instrument and contains no PCBs. Its main parts and related spare items are listed below. No individual part numbers were found in public sources, so they are marked Not verified.

Compass Card (165 mm)

Graduated floating card with the magnet system; shows heading through the bowl glass.

Gimbal Pins and Ring

Keep the bowl level when the ship rolls and pitches.

Compass Liquid and Expansion Chamber

Damps card movement and compensates for temperature change.

Condensing Reflector (HB-165A bowl)

Projects the card image to the reflector / periscope on the bridge. Part number: Not verified.

Lamp and Socket for Condensing Reflector

Card illumination lamp and its socket. Part number: Not verified.

Screen Glass for Compass Projector

Glass on which the projected card image is viewed. Part number: Not verified.

Heading Sensor / Pickup (remote display type)

Used in SH-165A2-1 with UD-10 Universal Display to transmit heading electrically. Part number: Not verified.

Main Components & Related Units

• HB-165A-S compass bowl (this item)
• Related bowls: HB-165A, HB-165A-1, HB-165A-5
• Compass systems: SH-165A, SH-165A1, SH-165A2 (reflector type) and SH-165A2-1 (remote display type)
• UD-10 Universal Display (heading indicator for SH-165A2-1)
• Binnacle / compass stand with reflector tube
• Deviation correctors: correcting magnets, quadrantal corrector spheres/sheets and Flinders bars
• Options: control panel, azimuth circle, azimuth mirror, course magnifier
• Related steering compass: Tokyo Keiki SM-150B

Marine & Industrial Applications

• Standard magnetic compass on the compass deck of merchant ships
• Steering magnetic compass via reflector or remote display
• Replacement of a damaged or bubbled compass bowl
• Bulk carriers, tankers, container ships, ferries and offshore vessels

Nameplate: Type Approval No. 4294, Serial No. N10872, Tokyo Keiki Inc. Japan

Common Problems & Troubleshooting

• Air bubble in the bowl: liquid loss through a seal; the bowl needs refilling and resealing.
• Card sticking or slow: pivot or jewel wear, or damaged card; workshop overhaul required.
• Discoloured liquid or card: aging of liquid or contamination; refurbishment required.
• Large deviation: check nearby magnetic material and electrical cables, then readjust correctors.
• No card illumination: check the lamp, socket and 24 V supply.

Safety note: keep magnets, tools and electrical cables away from the compass. Do not open the bowl on board; refilling and repair must be done by a qualified compass workshop, followed by compass adjustment.

Maintenance Tips

• Check daily for bubbles and smooth card movement
• Keep the bowl glass and reflector optics clean
• Check gimbal movement and lighting regularly
• Keep the deviation card updated and adjust the compass when required
• Protect the binnacle from direct sun and water ingress

Spare Parts & Replacement Availability

SM MARINE SERVICE™ supplies refurbished Tokyo Keiki magnetic compass bowls and can source related parts on request. For a fast quotation, please send:

• Bowl model (e.g. HB-165A-S, HB-165A-5) and serial number
• Nameplate photo and binnacle model
• Photos of any damaged part (lamp, reflector, glass)
• Vessel name and delivery port

We ship worldwide by courier and air freight to ports in Asia, the Middle East, Europe, Africa and the Americas.

Why This Equipment Is Still Used

The magnetic compass works without electrical power and is required by SOLAS on all ships. Replacing only the bowl with an identical Tokyo Keiki unit keeps the existing binnacle, reflector and correctors in use, saving cost and installation time.

FAQ

What is the Tokyo Keiki HB-165A-S?

It is a 165 mm magnetic compass bowl made by Tokyo Keiki Inc., Japan, used in the SH-165A series standard / steering magnetic compass systems.

What is type approval No. 4294?

It is the Japanese Government type approval number shown on the nameplate; Tokyo Keiki lists Certificate No. 4294 for its SH-165A2 magnetic compass.

Is HB-165A-S the same as HB-165A-5 or HB-165A-1?

They belong to the same HB-165A bowl family, but suffixes can mean different versions. Please send your nameplate photo so we can confirm compatibility.

Which binnacle does it fit?

Tokyo Keiki SH-165A, SH-165A1 and SH-165A2 compass stands are related systems. Fit must be checked by model and nameplate.

Does the compass bowl have PCBs?

No. The bowl is a mechanical/optical unit; electrical parts are the illumination lamp and socket. Remote display versions use a heading sensor and the UD-10 display.

Can you supply the condensing reflector lamp and socket?

Yes, on request. Send the bowl model and a photo of the part.

Why is there a bubble in my compass bowl?

A bubble usually means liquid loss through a seal. The bowl should be refilled and resealed by a compass workshop.

How often should the compass be adjusted?

Deviation should be checked regularly and after major repairs, and the compass adjusted by a qualified compass adjuster as required by flag and class.

What do you need for a quotation?

Model, serial number, nameplate photo, vessel name and delivery port.

Do you ship worldwide?

Yes. SM MARINE SERVICE™ ships worldwide from Bangladesh and China.

Short Product Description

The Tokyo Keiki HB-165A-S is a Japanese 165 mm liquid-filled magnetic compass bowl for the standard and steering magnetic compass on board ships. The unit shown carries Japanese type approval No. 4294 and serial No. N10872. It fits the Tokyo Keiki SH-165A compass family, used with a reflector tube or with the UD-10 remote display, and is part of the SOLAS backup heading system that works without electrical power. SM MARINE SERVICE™ supplies refurbished Tokyo Keiki compass bowls and sources magnetic compass spare parts such as lamps, reflectors and screen glass for vessels worldwide.

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SM MARINE SERVICE™ – Marine Automation & Navigation Equipment Supplier

Available Equipment Conditions: New • Used • Refurbished • Reconditioned (Specific product condition and availability are subject to confirmation.)
Stock Locations: Bangladesh • China
Services: Worldwide Shipping • Technical Support • Spare Parts Supply • Marine Equipment Sourcing
Samir Market, DT Road, Pahartali, beside CDA Market, Chattogram, Bangladesh
Mobile / WhatsApp / Viber: +88 01818 929292
Email: info@smmarineservice.com
Website: https://www.smmarineservice.com/

Send us your compass model, serial number and photos today for a quick quotation on Tokyo Keiki magnetic compass bowls and spare parts.

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