Do you have a question about the ST40 Speed and is the answer not in the manual?
Questions and answers
David McKenzie
May 13, 2025
Hi. I share a 40' sailing catamaran. I have been told it is not safe to leave the blank plug in place when under way so the others leave the log in place all the time. I am getting sick of cleaning it.
Please let me know a refrence to convince the others to swap the log out when they dock.
The Waste from Electrical and Electronic Equipment (WEEE) Directive requires the recycling of waste electrical and electronic equipment. Whilst the WEEE Directive does not apply to some of Raymarine’s products, we support its policy and ask you to be aware of how to dispose of this product.
Handbook information To the best of our knowledge, the information in this handbook was correct when it went to press. However, Raymarine cannot accept liability for any inaccuracies or omissions it may contain. In addition, our policy of continuous product improvement may change specifications without notice.
Preface Preface Thank you for purchasing a Raymarine product. We are sure your ST40 instrument will give you many years of trouble-free operation. This instrument is designed to provide reliable performance, even under the most demanding conditions.
Warranty document and fitting Handbook. templates included in Handbook Note: The items shown here are supplied for an ST40 Speed system. If an instrument is purchased separately, a transducer is not included. If any item is not present, contact your Raymarine Dealer. D4570-2...
Chapter 4, Calibration. Coloured bezel and Desktop Mounting Bracket options are available for your ST40 instrument. Contact your Raymarine dealer for further information. 1.2 Operating procedures Operating information is presented in flow chart form. The flow charts show the various operating screens and key presses necessary to carry out the various instrument functions.
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ST40 Speed Instrument Owner’s Handbook NORMAL OPERATION Switch on The permanent screen selected at last switch off, is displayed. (Current speed or Water temperature) Current speed Maximum Water speed Temperature To reset 3 seconds Average Trip speed To reset To reset...
Chapter 1: Operation Adjusting display backlighting and contrast Hold down for 1 second to enter Adjust Backlight mode for 2 seconds to move through Adjust Backlight mode and enter Adjust Contrast mode ADJUST BACKLIGHTING During normal operation, press for 1 second The current backlighting level is displayed.
In order to minimise these effects and enable you to get the best possible performance from your Raymarine equipment, guidelines are given in the installation instructions, to enable you to ensure minimum interaction between different items of equipment, i.e.
• You are in the vicinity of another vessel or shore station emitting radio signals. Fixing faults All Raymarine products are subjected to comprehensive test and quality assurance programmes prior to packing and shipping. However, if a fault occurs, the following guidelines may help to identify and...
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Chapter 2: Maintenance and Fault Finding Low battery Action Recharge your vessel’s battery as soon as possible SPEED D4638-1 Action Display blank Check fuse/circuit breaker. Check power supply. Check SeaTalk cabling and ST40 SPEED connector security. D4639-2 No speed or Action water Check the condition of the transducer...
ST40 Speed Instrument Owner’s Handbook Action For example, backlighting SeaTalk information level changes implemented Check security of SeaTalk not being at one instrument do not connections between instruments. transferred affect other instruments Check condition of SeaTalk cables. between instruments Isolate faulty instrument by disconnecting instruments one by one.
Chapter 3: Installation Chapter 3: Installation This chapter describes how to install the ST40 Speed instrument, and associated speed transducer. The transducer is fitted in the hull of the vessel and is connected to the rear of the instrument. 3.1 Planning your installation...
If your Raymarine equipment is going to be connected to other equipment using a cable not supplied by Raymarine, a suppression ferrite MUST always be fitted to the cable close to the Raymarine unit. Tools required The tools required for fitting the standard ST40 instrument system are...
Steel (supplied as standard) Aluminium Wood M78716 Through hull bronze Other transducer types are also available for specific requirements. For further details, contact your local Raymarine dealer. 75 mm (2.94 in) diameter 51 mm (2.0 in) 14 mm diameter (0.57 in) 75 mm (2.94 in)
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ST40 Speed Instrument Owner’s Handbook The transducer should: • Be ahead of the propellers (by a minimum of 10% of the water line length ). • Be at least 150 mm (6 in) away from the keel (ideally ahead of the keel if a sailing yacht).
Chapter 3: Installation Instrument 55 mm 70 mm (2.2 in) (2.8 in) ST40 30 mm (1.2 in) 126 mm (5.0 in) minimum cable clearance 21 mm 17 mm (0.8 in) (0.67 in) Instrument dimensions D4644-2 CAUTION: The presence of moisture at the rear of the instrument could cause damage either by entering the instrument through the breathing hole or by coming into contact with the electrical connectors.
Running transducer cable Each transducer has a 9 m (30 ft) cable fitted with spade terminals for connection to the ST40 Speed instrument. Observing the following guidelines, run the cable to the instrument: • If the cable has to be fed through the deck, always use a good quality deck gland.
Chapter 3: Installation 10 mm 50 mm 4 mm 3 mm Preparing wires for connection D4467-3 Stand-alone connections CAUTION Ensure that the power supply for each stand-alone ST40 instrument is protected by a 3 A fuse or circuit breaker. Note: 3 A circuit breaker A 3 A fuse can be used in place of the circuit breaker, if preferred.
ST40 Speed Instrument Owner’s Handbook SeaTalk connections CAUTION When instruments are connected to SeaTalk, ensure that the power supply for the SeaTalk 12 V line is protected by a 5 A fuse or circuit breaker. Note: A 5 A fuse can be used in place of 5 A circuit breaker the circuit breaker, if preferred.
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Chapter 3: Installation Cut hole 57 mm (2.25 in) cutter D4760-1 Peel protective sheets from gasket D4770-1 Stick gasket to rear of instrument D4761-1...
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ST40 Speed Instrument Owner’s Handbook Screw stud into instrument D4819-1 Feed cables through clamping bracket, Fit instrument connect cables then secure instrument with bracket and thumb nut D4816-1 Desktop Mounting Bracket An optional Desktop Mounting Bracket (Part No. E25024) enables you to mount your ST40 instrument in locations where other forms of mounting are impractical.
Chapter 3: Installation D4646-1 To bracket mount your ST40 instrument, do so in accordance with the Instruction Sheet, which is included with the Desktop Mounting Bracket. 3.3 Calibration requirement Once installation is complete and before you use your instrument, carry out the calibration procedures detailed in Chapter 4, Calibration.
Chapter 4: Calibration Chapter 4: Calibration 4.1 Introduction The procedures in this Chapter must be carried out before the equipment is used operationally, to optimise the performance of the instrument with the vessel. Calibration information is presented in flow chart form. The flow charts show the various calibration screens and key presses necessary to carry out calibration.
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ST40 Speed Instrument Owner’s Handbook USER CALIBRATION During normal operation hold down for approximately 2 seconds Entry screen Note: If there is no key activity when the Entry screen is displayed, calibration will time out to normal operation after 5 seconds,...
Chapter 4: Calibration 4.3 Intermediate calibration Intermediate calibration enables you to: • Check the instrument software version. • Check and if necessary set, the instrument status - either MASTR (master) or REPTR (repeater). Follow the procedure in the Intermediate calibration flow diagram. INTERMEDIATE CALIBRATION During normal operation hold down...
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ST40 Speed Instrument Owner’s Handbook DEALER CALIBRATION During normal operation hold down for approximately 12 seconds Entry screen Note: If there is no key activity when the Entry screen is displayed, calibration will time out to normal operation after 5 seconds,...
Instrument Specification Instrument Specification Supply voltage: 10 V to 16 V dc. Current consumption (12 V supply): 25 mA typical. 60 mA with maximum backlighting. 0°C to +70°C. Operating temperature: Interfaces: SeaTalk. Overall dimensions: 126 mm x 70 mm x 38 mm (5.00 inches x 2.80 inches x 1.55 inches).
Glossary Glossary Cal factor Calibration factor. Used in ST40 Speed and Bidata instruments to ensure the current speed reading is the actual speed. Values are from 0.25 (reduce speed reading) to 2.5 (increase speed reading). Electromagnetic Compatibility. Kilometres Per Hour.
Index Index Fault finding 6 Average speed reset 2 assistance 8 blank display 7 low battery 7 Backlighting 3 no speed information 7 Boat show mode 23 no speed or water temperature information 7 SeaTalk problems 8 Calibration 21–24 Dealer 23–24 Intermediate 23 Installation 9–19 setting appropriate response val-...
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ST40 Speed Instrument Owner’s Handbook Normal operation 2–3 Transducer fitting 14 site requirements 11–12 Trip distance 1 Operating procedures 1–3 Trip distance reset 2 Operating temperature 25 Trip range 25 Panel lighting 3 User calibration 21–22 Parts supplied vi Voltage 25...
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For any Raymarine product or system that (i) has been installed on your vessel by a Raymarine-certified service agent or by a Raymarine OEM, and (ii) has a MSRP equal to or greater than USD $2,500, you are eligible to receive warranty service by a Raymarine certified service agent on-board your vessel (‘On Board Warranty Service’) for a period of 12...
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Other conditions This Warranty is fully transferable provided that you furnish the original proof of purchase to Raymarine or, in the case of On Board Warranty Service, to a Raymarine-certified service agent. This Warranty is void if the label bearing the serial number has been removed or defaced.
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2 years (24 months), subject to the limits contained in this warranty document. In the case of a product installed, by a Raymarine certified OEM installer, on a new boat prior to the sale of the boat to a customer, the 2-year period will begin on the date of the sale of the boat to the customer.
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Raymarine Service Agent) at no further cost and promptly returned to the customer. 3.3 In cases where the customer is making a warranty claim and the product has been installed by a Raymarine certified installer, (boat builder, installer, dealer etc.) i.e. Onboard warranty, the nearest Raymarine approved service agent should be contacted and onboard service requested (which will be subject to the limits referred to in paragraph 4.12 below).
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Raymarine World Wide Warranty 4.10 If repairs are necessary under the warranty, the affected product must be forwarded to a Raymarine facility or a Raymarine approved service agent, at the owner’s expense. 4.11 The Raymarine warranty does not cover any differences in material, coloring or size between those alluded to in corporate advertising, literature or published on the internet, which are not specifically objected to at the time of delivery.
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Raymarine Technical Support Raymarine Technical Support +44 (0) 23 9271 4713 1-800-539-5539 or, +1 603-881-5200 Product Repair and Service Product Repair and Service Raymarine plc Raymarine Product Repair Center Anchorage Park 21 Manchester Street, Portsmouth Merrimack, PO3 5TD NH 03054-4801 England...
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Do you have a question about the ST40 Speed and is the answer not in the manual?
Questions and answers
Hi. I share a 40' sailing catamaran. I have been told it is not safe to leave the blank plug in place when under way so the others leave the log in place all the time. I am getting sick of cleaning it. Please let me know a refrence to convince the others to swap the log out when they dock.