Introduction
This manual provides essential instructions for the proper use and care of your Spinnaker Hull SP-5088-05 Automatic Wrist Watch. Please read this manual thoroughly to ensure optimal performance and longevity of your timepiece. This watch features an automatic mechanical movement and is designed for robust use, including diving.

Image: The Spinnaker Hull SP-5088-05 Automatic Wrist Watch, showcasing its dark blue dial, bronze-tone bezel, and leather strap from an angled perspective.
Setup and Initial Winding
Your Spinnaker Hull SP-5088-05 is an automatic mechanical watch. It is powered by the motion of your wrist and does not require a battery. For initial setup or if the watch has stopped, follow these steps:
- Unscrew the Crown: The crown is located on the side of the watch case. Gently unscrew it counter-clockwise until it springs free from the case. This is the winding position (Position 0).
- Manual Winding: In Position 0, turn the crown clockwise approximately 30-40 times. This will provide enough power reserve to start the watch. You should feel a slight resistance as you wind.
- Set the Date: Pull the crown out to the first click (Position 1). Turn the crown either clockwise or counter-clockwise to adjust the date. Avoid setting the date between 9 PM and 3 AM, as this can damage the movement. If the current time falls within this period, first set the time outside this window, then set the date, and finally reset the time.
- Set the Time: Pull the crown out to the second click (Position 2). The second hand will stop. Turn the crown to set the hour and minute hands. To ensure accurate time setting, synchronize with a reliable time source. Push the crown back in to restart the second hand.
- Secure the Crown: Once the time and date are set, push the crown back into the case and screw it down clockwise firmly until it is tight. This ensures the watch's water resistance.

Image: A close-up view of the Spinnaker Hull SP-5088-05 watch dial, highlighting the hands, luminous markers, date window, and the crown on the right side of the case, which is used for setting the time and date.
Operating Your Watch
Automatic Movement
Once initially wound, your watch will continue to run as long as it is worn regularly. The rotor inside the watch winds the mainspring with the natural motion of your arm. If the watch is not worn for an extended period (typically 40-48 hours, depending on the power reserve), it will stop and require manual winding to restart.
Unidirectional Rotating Bezel
The Spinnaker Hull SP-5088-05 features a unidirectional rotating bezel. This bezel is designed for timing events, particularly dives. To use it:
- Rotate the bezel counter-clockwise to align the zero marker with the minute hand.
- The minute hand will then indicate the elapsed time against the bezel's scale.
- The unidirectional design prevents accidental clockwise rotation, which could falsely indicate less elapsed time during a dive, enhancing safety.
Water Resistance (300 Meters / 1000 Feet)
This watch is rated for 300 meters (30 ATM) of water resistance, making it suitable for professional marine activity and serious surface water sports, but not for saturation diving. Always ensure the crown is fully screwed down before exposing the watch to water. Do not operate the crown or pushers (if present) while the watch is wet or submerged.

Image: The Spinnaker Hull SP-5088-05 watch worn on a wrist, demonstrating its appearance and fit during daily use.
Maintenance and Care
- Cleaning: Wipe the watch case and crystal with a soft, dry cloth. For stubborn dirt, a slightly damp cloth can be used, but ensure the crown is fully screwed down. Avoid harsh chemicals or abrasive materials.
- Leather Strap Care: The leather strap is susceptible to damage from water, sweat, and direct sunlight. Avoid prolonged exposure to moisture. If the strap gets wet, dry it gently with a soft cloth and allow it to air dry completely away from direct heat. Regular cleaning with a specialized leather cleaner can help maintain its condition.
- Avoid Extreme Temperatures: Do not expose your watch to sudden temperature changes or extreme heat/cold, as this can affect the movement and seals.
- Magnetic Fields: Keep your watch away from strong magnetic fields (e.g., speakers, refrigerators, certain electronic devices) as magnetism can affect the accuracy of mechanical movements.
- Servicing: Mechanical watches benefit from periodic servicing, typically every 3-5 years, to ensure optimal performance and lubrication of the movement. Contact an authorized service center for professional maintenance.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Watch has stopped or is running slow. | Insufficient power reserve (not worn enough or not manually wound). | Manually wind the watch by unscrewing the crown and turning it clockwise 30-40 times. Wear the watch regularly. |
| Date changes at noon instead of midnight. | The AM/PM setting is incorrect. | Advance the time by 12 hours. |
| Watch is running too fast or too slow consistently. | Exposure to magnetic fields, impact, or requires regulation. | Demagnetize the watch or have it regulated by an authorized service center. Avoid strong magnetic fields. |
| Moisture under the crystal. | Crown not fully screwed down, damaged gasket, or extreme temperature change. | Immediately take the watch to an authorized service center. Do not attempt to dry it yourself. |
Specifications
- Model: SP-5088-05 (Hull Diver)
- Movement: Automatic Mechanical
- Case Material: Stainless Steel
- Case Diameter: 42 Millimeters
- Case Thickness: 14 Millimeters
- Band Material: Leather
- Band Width: 22 Millimeters
- Clasp Type: Tang Buckle
- Crystal: Sapphire Crystal
- Water Resistance: 300 Meters (30 ATM / 1000 Feet)
- Dial Color: Blue
- Bezel: Unidirectional Rotating

Image: A front view of the Spinnaker Hull SP-5088-05 Automatic Wrist Watch, clearly showing the dark blue dial, luminous markers, and the bronze-tone unidirectional bezel.
Warranty and Support
Spinnaker watches are manufactured to high standards and are typically covered by a manufacturer's warranty against defects in materials and workmanship. Please refer to the warranty card included with your purchase for specific terms and conditions, including the warranty period and coverage details.
For technical assistance, service, or warranty claims, please contact Spinnaker customer support or an authorized service center. You can usually find contact information on the official Spinnaker website or through your retailer.
Important: Unauthorized repairs or modifications may void your warranty. Always seek professional assistance for any issues beyond basic operation and care.





