Grand Silver Line S370N Owner's Manual
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Grand Silver Line S370N Owner's Manual

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Summary of Contents for Grand Silver Line S370N

  • Page 2 CONTENTS...
  • Page 4 CONTENTS Edition 3/April 2023...

  • Page 5: Table Of Contents

    Stability and buoyancy ....................... 21 Risk of fire or explosion ..................... 23 Fire prevention ......................... 24 Fuel ..........................27 While fueling ........................27 Fire-fighting equipment (for S420N) ................... 28 Electrical systems - Safety rules ..................29 Silver Line S370N, S420N Owner’s Manual...
  • Page 6 TABLE OF CONTENTS Engine starting ......................29 Man-overboard prevention and recovery ..............29 Means of reboarding ....................30 Danger from moving parts ..................30 Safety equipment ..................... 31 Safety driving rules ....................32 BOAT IDENTIFICATION ................34 Boat’s identification number ..................34 Builder’s plate ......................
  • Page 7 Electrics ........................56 Navigation lights ...................... 62 Horn ........................62 Anchoring and mooring .................... 64 Anchoring ........................ 64 Mooring ........................65 Beaching, launching and recovering the boat from the water ........67 Towing ........................68 Silver Line S370N, S420N Owner’s Manual...
  • Page 8 TABLE OF CONTENTS TECHNICAL INFORMATION ............... 77 Technical specifications .................... 77 Standard and optional equipment ................79 Compartment chart ....................81 General arrangement of a boat S370N (NF), S420N (NF) ..........82 General arrangement of a boat S370NS (NSF), S420NS (NSF)........83 General arrangement of a boat S370NL (NLF), S420NL (NLF) ........
  • Page 9 Plastic preservation ....................107 Cleaning ........................ 107 Salt removal ......................108 Polishing ....................... 108 Waxing ......................... 108 Cleaning of the underwater part of the hull from deposits .......... 109 Antifouling hull protection ..................109 Silver Line S370N, S420N Owner’s Manual...
  • Page 10 Regular inspections ....................115 TRAILERING .................... 116 Lifting the boat ...................... 116 Boat towing ......................117 RESPECTING THE ENVIRONMENT ............118 GRAND’S WARRANTY ................119 General ......................... 119 Warranty period ..................... 119 Warranty coverage ....................120 Warranty exclusions ....................121...

  • Page 11: Safety Information

    INTRODUCTION Thank you for choosing a Grand boat. If you need assistance or advice please contact your Grand Dealer or Distributor who has qualified specialists, special tools, original spare parts and accessories and will be happy to assist. is not intended to...

  • Page 12: Precautionary Symbols

    Please note that in some countries a boat operating license or other form of authorization may be required. We strongly recommend that your boat is inspected at least once a year by an authorized Grand agent.
  • Page 13 Data sheets and specifications given in this manual relate to the boat's characteristics at the time of publishing. Grand reserve the right to introduce changes in specifications and equipment without notice and without obligation. We continually work with our customers to improve quality and to ensure you will be completely satisfied with your Grand boat.

  • Page 14: General Information

    SAFETY GENERAL INFORMATION Name of craft Manufacture: GRAND MARINE. Models: S370N, S370NF, S370NS, S370NSF, S370NL, S370NLF, S420N, S420NF, S420NS, S420NSF, S420NL, S420NLF. According to the Recreational Craft Directive 2013/53/EU of the European Parliament and of the Council of 20 November 2013, which is in force, your boat has design category: C, i.e., the craft is designed to operate in the following conditions: Wind (Beaufort scale) up to and including Force 6.

  • Page 15: Maximum Number Of Persons

    Note that excess and unevenly distributed load within the boat can create unstable steering conditions and even loss of control. Silver Line S370N, S420N Owner’s Manual...

  • Page 16: Engine Information

    SAFETY WHEN LOADING THE CRAFT, NEVER EXCEED THE MAXIMUM RECOMMENDED LOAD. ALWAYS LOAD THE CRAFT CAREFULLY AND DISTRIBUTE LOADS APPROPRIATELY TO MAINTAIN DESIGN TRIM (APPROXIMATELY LEVEL). AVOID PLACING HEAVY WEIGHTS HIGH UP. ENGINE INFORMATION Information about recommended engine capacities, maximum engine capacities, maximum engine weights for each model are given in the technical data sheet of “TECHNICAL INFORMATION”...

  • Page 17: Risk Of Flooding And Stability

    To drain the hull, remove the plug (fig. 1). Hull drain plug Fig. 1. The hull drain plug is located on the transom. After removal refit and re-tighten (do not over-tighten) the plug before using the boat. Silver Line S370N, S420N Owner’s Manual...
  • Page 18 SAFETY COCKPIT DRAINAGE OF S370N The boat is equipped with one cockpit drain valve located at the transom. Cockpit drain valve Fig. 2. Cockpit drain valve. WHEN THE BOAT IS ON LAND/DAVIT OR TRAILER, OPEN THE COCKPIT DRAIN VALVE SO THAT WATER (RAINWATER, FOR INSTANCE) CAN EASILY DRAIN OUT OF THE BOAT AND NO DAMAGE TO THE INTERNAL COMPONENTS (E.G THE BATTERY) WILL OCCUR.
  • Page 19 WHEN THE BOAT IS ON LAND/DAVIT OR TRAILER, OPEN THE COCKPIT DRAIN PLUGS SO THAT WATER (RAINWATER, FOR INSTANCE) CAN EASILY DRAIN OUT OF THE BOAT AND NO DAMAGE TO THE INTERNAL COMPONENTS (E.G THE BATTERY) WILL OCCUR. Silver Line S370N, S420N Owner’s Manual...

  • Page 20: Bilge Pump (Optional) And Bailing

    SAFETY BILGE PUMP (OPTIONAL) AND BAILING The craft can be equipped with a bilge pump and drain pipe. In this case use a switch located on the steering console to turn it on/off. THE BILGE PUMP SYSTEM IS NOT DESIGNED FOR DAMAGE CONTROL. CHECK BILGE PUMPS REGULARLY TO MAKE SURE THEY ARE WORKING.

  • Page 21: Stability And Buoyancy

    If, after an accident, a tube compartment deflates, bring it inside the boat, restore the load ▪ balance to the opposite side of the deflated compartment and return to port at reduced speed. Silver Line S370N, S420N Owner’s Manual...
  • Page 22 SAFETY In case of a collision or an impact with a floating object, stop to examine the hull, the buoyancy ▪ tubes, the motor and its attachments and return to shore at a low speed. Signal for help. ▪ Following an accident and before using the craft again, make sure that it is examined by your dealer or a qualified technician and any defects are repaired.

  • Page 23: Risk Of Fire Or Explosion

    For information concerning safe operation of the engine consult the manufacturers instruction manual. Silver Line S370N, S420N Owner’s Manual...

  • Page 24: Fire Prevention

    SAFETY FIRE PREVENTION Consult your Dealer for more detailed information on this subject before operating your boat. The owner/helmsman of the craft should: − Inform all crew members about the location and operation of all firefighting equipment. − Check firefighting equipment at the intervals indicated on each item. Replace any used extinguisher with one of same type and rating −...
  • Page 25 BEFORE ALL PASSENGERS ARE FORCED TO LEAVE THE BOAT, CHECK THAT EVERYONE IS WEARING A LIFEJACKET. DUE TO THE FACT THAT BURNING FUEL MAY SPREAD OVER THE SURFACE OF THE WATER AND THE RISK OF EXPLOSION, TRY TO SWIM A SAFE DISTANCE AWAY FROM THE BOAT. Silver Line S370N, S420N Owner’s Manual...
  • Page 26 SAFETY BATTERY AVOID SPARKS AND EXPOSED FLAMES NEAR BATTERY. IT MAY EXPLODE. KEEP BATTERY TERMINALS PROTECTED SO AS TO AVOID A SHORT CIRCUIT OR CONTACT WITH ANY METAL OBJECTS. TURN OFF THE ENGINE WHEN INSPECTING OR SERVICING THE BATTERY. NEVER KEEP THE BATTERY CLOSE TO A FUEL TANK, FILLER OR FUEL SYSTEM COMPONENTS.

  • Page 27: Fuel

    If fuel is spilt on the hull, use an ordinary, non-abrasive cleaner then wipe with a damp cloth and rinse the area with clean water. NEVER FILL ANY FUEL TANK WHEN ENGINE IS RUNNING. Silver Line S370N, S420N Owner’s Manual...

  • Page 28: Fire-Fighting Equipment (For S420N)

    SAFETY FIRE-FIGHTING EQUIPMENT (FOR S420N) It is the owner/helmsman’s responsibility to have an appropriate fire extinguisher in serviceable condition and readily accessible on board as prescribed by local requirements. At least one portable extinguisher type 34 B shall be present on board of S420N. The storage compartment of a portable fire extinguisher is marked by the symbol shown in Fig.

  • Page 29: Electrical Systems - Safety Rules

    When the boat is underway, the helmsman and passengers should always occupy designated seating areas, using handles when necessary. Other parts such as seat backs, cleats, windscreen tops and rails can be used as handholds to reduce the risk of falling overboard. Silver Line S370N, S420N Owner’s Manual...

  • Page 30: Means Of Reboarding

    SAFETY IF PASSENGERS ARE NOT IN DESIGNATED SEATING WHEN UNDERWAY THERE IS A RISK OF FALLING INSIDE THE BOAT OR OVERBOARD CAUSING SERIOUS INJUERY OR DEATH. Areas such as the bow step plate, the engine well, tube step ends should not be used as seating when the boat is underway.

  • Page 31: Safety Equipment

    CONSULT YOUR LOCAL DEALER REGARDING REQUIRED SAFETY EQUIPMENT IN YOUR COUNTRY/STATE BEFORE GOING AFLOAT. Planning a trip, remember that not all fuel can be used from the fuel tank depending on the load and trim. About 20% can remain in the fuel tank. Silver Line S370N, S420N Owner’s Manual...

  • Page 32: Safety Driving Rules

    SAFETY SAFETY DRIVING RULES DO NOT EXCEED THE AUTHORIZED NUMBER OF PERSONS OR MAXIMUM WEIGHT FOR THE ▪ CRAFT. MAKE SURE YOUR PASSENGERS REMAIN SEATED ON SEATS OR ON THE FLOOR. AVOID ▪ SITTING ON TUBES. AVOID BOW RIDING AS IT MAY BE ILLEGAL AND IS EXTREMELY DANGEROUS. ▪...
  • Page 33 Please remember also that the is not designed to jump through the waves. The builder is not responsible for any damage from excessive loads resulting in neglect of the precautions outlined in this manual. Silver Line S370N, S420N Owner’s Manual...

  • Page 34: Boat Identification

    BOAT IDENTIFICATION 2. BOAT IDENTIFICATION BOAT’S IDENTIFICATION NUMBER Every boat has “Watercraft Identification Number” (WIN), which uniquely identifies your boat and is important for safety and identification purposes. The WIN is marked on a non-removable metal plate, which is fixed to the transom area of your boat (fig. 5). Fig.

  • Page 35: Builder's Plate

    6 - Maximum weight of outboard motor allowed by the builder expressed in kilograms and lbs. 7 – Nominal Pressure of the buoyancy tubes in Bar and Psi. Fig. 6. Builder’s plate. Silver Line S370N, S420N Owner’s Manual...
  • Page 36 BOAT IDENTIFICATION Always refer to local regulations for information on additional requirements. *Design category (European Directive 2013/53/EU): Category Navigation "Inshore" "Protected water" Wind speed (Beaufort scale) Up to and including F6 Up to and including F4 Significant height of wave to Up to and including 2m Up to and including 0.3m consider (in meters)

  • Page 37: Before Operating Your Craft

    Reduce speed whilst maintaining sufficient power to continue making headway. ▪ Check that all passengers have personal flotation devices and are sitting close to the boat’s ▪ centerline. CHECKLIST BEFORE DEPARTURE MAKE SURE YOU HAVE ALL NECESSARY INFORMATION AND PASSENGERS ARE INFORMED. Silver Line S370N, S420N Owner’s Manual...

  • Page 38: General

    BEFORE OPERATING YOUR CRAFT GENERAL 1. OBTAIN INFORMATION on local regulations and hazards related to marine activities and boat operation. 2. CHECK weather forecast, local currents, tides and wind conditions. 3. ADVISE someone on land when you expect to be back. 4.

  • Page 39: Checking The Boat And Equipment

    Check that the boat is equipped with two oars/paddles. Check the condition of the oars and ▪ rowlocks. Be sure that the boat is equipped with at minimum 2 x boat length of suitable towing line. ▪ Silver Line S370N, S420N Owner’s Manual...

  • Page 40: Rules To Observe When Afloat

    BEFORE OPERATING YOUR CRAFT RULES TO OBSERVE WHEN AFLOAT Be responsible: do not ignore safety rules. ▪ Make sure that you are always in control of your boat. ▪ Always operate your boat with courtesy and respect for others. ▪ Respect local regulations and practices.

  • Page 41: Operating The Craft

    Align holes in the windscreen railing with holes in ▪ the console CS-01W/CS-03. Fix windscreen railing by means of the bolts M8x20, ▪ support windscreen railing and washers from the complete set. Tighten all the bolts and screws. ▪ Silver Line S370N, S420N Owner’s Manual...

  • Page 42: Cl-11 Steering Console Installation

    TIGHT ALL THE HOLE FREE SPACE WITH ANY WATER-RESISTANT FILLER. ALL BOLTS, SCREWS AND NUTS SHOULD BE CHECKED FROM TIME TO TIME TO MAKE SURE THEY ARE TIGHTENED. FOR MORE INFORMATION, PLEASE CONTACT Fig. 8. Installation of steering console CL-11. YOUR LOCAL GRAND AUTHORIZED DEALER.

  • Page 43: Cs-01W/Cs-03 Steering Console Installation

    ALL BOLTS, SCREWS AND NUTS SHOULD BE CHECKED FROM TIME TO TIME TO MAKE SURE THEY ARE TIGHT. MORE INFORMATION, PLEASE Fig. 9. Installation of steering console CONTACT YOUR LOCAL GRAND CS-01W/CS-03. AUTHORIZED DEALER. Silver Line S370N, S420N Owner’s Manual...

  • Page 44: Container Installation

    TIGHT ALL THE HOLE FREE SPACE WITH ANY WATER-RESISTANT FILLER. ALL BOLTS, SCREWS AND NUTS SHOULD BE CHECKED FROM TIME TO TIME TO MAKE SURE THEY ARE TIGHT. FOR MORE INFORMATION, PLEASE CONTACT Fig. 10. Installation of container. YOUR LOCAL GRAND AUTHORIZED DEALER.

  • Page 45: Tube Inflation

    To inflate the tube chamber, first open the valve cap by turning it about half a turn counter clockwise (fig. 12). The spindle should be in the upper (closed) position. “O” ring and cap seals of the valve can wear out overtime and can be subject to change. Silver Line S370N, S420N Owner’s Manual...
  • Page 46 OPERATING THE CRAFT Valve cap Strap Spindle a) The valve is closed b) The valve is open Fig. 12. Design of the inflation valve. When the spindle is in the normal (closed) position, the valve operates as a check valve and opens when air is pumped into the tube.
  • Page 47 Fig. 13. Foot pump. Insert the end of the hose into the inflation valve using one of the appropriate adapters. Make sure the adaptor makes an air-tight connection with the valve and inflate using foot pump. Silver Line S370N, S420N Owner’s Manual...
  • Page 48 OPERATING THE CRAFT Inflation valve. Option 2 If the boat is equipped with a valve as shown in figure 14, follow the instructions below. To open the valve cap turn it a quarter counter clockwise. The plunger should be in the upper (closed) position.
  • Page 49 Begin the inflation procedure according to the sequence shown in figure 15. Initially, partially inflate each chamber (approx. 0.1 bar (1.45 psi) then repeat the procedure inflating each chamber to its nominal pressure, 0.15 bar (2.15 psi). Silver Line S370N, S420N Owner’s Manual...
  • Page 50 OPERATING THE CRAFT The drop of pressure up to 20 mbar is normal after the boat has been put on the water the due to the difference between air and water temperature. Fig. 15. Tube inflation sequence. The nominal pressure is 0,15 bar (2,15 psi). Check the pressure in each chamber with a pressure gauge.
  • Page 51 DO NOT USE SOURCES OF HIGH-PRESSURE COMPRESSED AIR FOR INFLATING THE TUBE. EXCESSIVE PRESSURE CAN DAMAGE THE GLUE JOINTS AND THE INTERNAL WALLS. Silver Line S370N, S420N Owner’s Manual...

  • Page 52: Overpressure Valve (If Fitted)

    OPERATING THE CRAFT OVERPRESSURE VALVE (IF FITTED) Overpressure valves can be fitted to buoyancy tubes as shown in figure 16. It serves to protect the tube from over inflation and excess pressure build up due to solar heat. Without strainer With strainer Fig.

  • Page 53: Motor Installation

    Please refer to the manual supplied by motor manufacturer before operating the motor and craft. The optimum position is with the propeller axis parallel with the water. CORRECT Fig. 17. Optimum trim. Silver Line S370N, S420N Owner’s Manual...
  • Page 54 OPERATING THE CRAFT If the motor is tilted too far outwards from the transom, the boat will tend to porpoise. INCORRECT Fig. 18. Trim up. If the motor is tilted too far inwards towards the transom the boat will travel bow down.
  • Page 55 WHEN THE ENGINE IS RUNNING, THE KILL SWITCH LANYARD SHOULD ALWAYS BE WORN ON THE WRIST, ANKLE, OR FIXED TO YOUR CLOTHES OR TO YOUR PERSONAL FLOTATION DEVICE. IGNORING THIS INSTRUCTION MAY CAUSE DEATH OR SERIOUS INJURY. Silver Line S370N, S420N Owner’s Manual...

  • Page 56: Electrics

    OPERATING THE CRAFT ELECTRICS System voltage – 12V, two-wire d.c. system with negative ground (earth). Connection is done through a motor. BATTERY ISOLATOR SWITCH The battery isolator switch is designed to isolate the battery from the boat’s electrical circuit. It is used when the boat is in long-term storage to prevent the battery becoming drained, during maintenance (this should be done by qualified electrical technician.
  • Page 57 OPERATING THE CRAFT SWITCH PANEL Use the following switches located on the steering console to switch on/off a horn, navigation lights and bilge pump. Switch panel Navigation Bilge pump Horn lights Fig. 22. Switch panel. Silver Line S370N, S420N Owner’s Manual...
  • Page 58 OPERATING THE CRAFT LOCATION OF FUSE BOX IN CL-11 STEERING CONSOLE If the boat is equipped with CL-11 steering console, the fuse box is located on the right inboard side of steering console, under a seat. To get access to the fuse box, open the seat. To change a fuse, unlock and open fuse box transparent cover.
  • Page 59 Place the fuse box cover back. The ratings of relevant fuses are given below. Circuit Fuse rating, A Fuse box Horn Navigation lights Bilge pump USB socket Fig. 22. CS-03. Fuse box location. Silver Line S370N, S420N Owner’s Manual...
  • Page 60 OPERATING THE CRAFT BILGE PUMP (IF APPLICABLE) The bilge pump serves to pump water out of the bilge area of the boat. The bilge pump is located in the drain well. Bilge pump Pump specifications: Capacity 1.9 m /h (with zero head). Power 12 V/1.6 А.
  • Page 61 Fig. 25. Folding navigation arch. Navigation arch is equipped with side navigation lights, all-round light and horn. If needed navigation arch can be easily stored. See the description of above element on the next page. Silver Line S370N, S420N Owner’s Manual...

  • Page 62: Navigation Lights

    OPERATING THE CRAFT NAVIGATION LIGHTS Navigation lights are designed to indicate the craft's relative position, the nature of its movement or it’s location at night. The side lights are a green light on the starboard side and a red light on the port side.
  • Page 63 The boat is fitted with lifting eyes at the bow and rear (fig. 26, 27). Use these eyes to lift the boat. Fig. 26. Bow lifting eyes, 2 positions. Fig. 27. Rear lifting eyes, 2 positions. Silver Line S370N, S420N Owner’s Manual...

  • Page 64: Anchoring And Mooring

    OPERATING THE CRAFT ANCHORING AND MOORING ANCHORING Please make sure your craft is equipped with an appropriate anchor and line. If you are not sure, ask your Dealer who will be happy to advise. Setting-up a secure anchorage requires knowledge and practice so it is important that properly trained persons undertake this procedure.

  • Page 65: Mooring

    OPERATING THE CRAFT MOORING Use the bow towing eye and rear lifting eyes for mooring. Bow towing eye Fig. 28. Bow towing eye. Rear lifting eyes Fig. 29. Rear lifting eyes. Silver Line S370N, S420N Owner’s Manual...
  • Page 66 OPERATING THE CRAFT When the boat is moored or parked the cockpit drain valves should remain open. This will ensure rain water does not accumulate in the boat. Breaking strength of rear lifting eye, kN S370N S420N THE BREAKING STRENGTH OF LINES SHALL IN GENERAL NOT EXCEED 80% OF THE BREAKING STRENGTH OF THE RESPECTIVE STRONG POINT.

  • Page 67: Beaching, Launching And Recovering The Boat From The Water

    NEVER DRAG THE BOAT OVER A ROUGH SURFACE (ROCKS, STONES, CONCRETE, ETC) AS THE HULL AND TUBE CAN EASILY BE DAMAGED. Regularly check the surface of the fiberglass hull. If the gel coat is damaged, contact your Dealer for repair. Silver Line S370N, S420N Owner’s Manual...

  • Page 68: Towing

    OPERATING THE CRAFT TOWING When towing an inflatable boat behind another craft, always connect the tow line only to the towing eyes. It’s forbidden to use handles, railings, cleats or other equipment which is not designated for towing. If possible, use a double tow line when towing behind another boat. The second line acts as a backup in case one line breaks or comes undone.
  • Page 69 S370N S420N THE BREAKING STRENGTH OF LINES SHALL IN GENERAL NOT EXCEED 80% OF THE BREAKING STRENGTH OF THE BOW TOWING EYE. Bow towing eye Fig. 30. Bow towing eye. Silver Line S370N, S420N Owner’s Manual...
  • Page 70 OPERATING THE CRAFT BOW LOCKER AND DOUBLE SEAT LOCKER (IF APPLICABLE) Removable cushion (Base and sport) Fig. 31. Bow locker. Fig. 32. Double seat locker. Before make a trip, check that all cushions are fastened well. Always remove the cushions carefully. Do not pull the cushion to open a snap button.
  • Page 71 NEVER USE BOW SUNDECK WHEN THE BOAT IS UNDERWAY. THERE IS A RISK TO FALL OVERBOARD. ALWAYS STORE REMOVABLE SUNDEC INSIDE THE STORAGE COMPARTMENT IF YOU ARE PLANNING TO CRUISE AT MORE THAN 15 KNOTS. Silver Line S370N, S420N Owner’s Manual...
  • Page 72 OPERATING THE CRAFT BOW STEP PLATE (IF APPLICABLE) Cleat Anchor roller Fig. 34. Bow step plate.
  • Page 73 OPERATING THE CRAFT REMOVABLE SEAT CUSHIONS WITH BAG FOR S370N (IF APPLICABLE) Fig. 35. Removable seat cushions with bag. Silver Line S370N, S420N Owner’s Manual...
  • Page 74 OPERATING THE CRAFT COLLAPSIBLE BIMINI TOP (IF APPLICABLE) Collapsible Bimini top Fig. 36. Collapsible Bimini top. USE A BIMINI TOP WHEN YOUR BOAT IS NOT IN MOTION. KEEP BIMINI TOP IN STOWED POSITION IF YOU PLANNING TO CRUISE AT MORE THAN 20-25 KNOTS.
  • Page 75 The opposite side of the rope should be fastened to the attachment structure located on the tube. The same procedure should be repeated with remaining three ropes. 7. Check that the top canvas is well stretched and all fastenings are tightened. Silver Line S370N, S420N Owner’s Manual...
  • Page 76 OPERATING THE CRAFT SEADECK ANTISKID SET (IF APPLICABLE) The following area of your boat (depending on the model) can be enhanced by SeaDeck antiskid material: Deck ▪ Bow step plate ▪ Fiberglass step ends ▪ Fig. 38. SeaDeck antiskid product. Extremely stain resistant SeaDeck surface, if needed, can be easily Safe and comfortable non-absorbent long-life product...

  • Page 77: Technical Information

    Width internal ft/inches 3’0” 3’0” 3’4” 3’4” Chambers Number Tube diameter inches 18” 18” 18” 18” Tube fabric PVC/Hypalon PVC/Hypalon PVC/Hypalon PVC/Hypalon Bare boat weight* 95/120 115/145 209/264 253/319 Full weight** 158/184 178/209 347/405 392/460 Silver Line S370N, S420N Owner’s Manual...
  • Page 78 TECHNICAL DETAILS Loading capacity 1320 1320 1430 1430 Passenger capacity Number Maximum height (light craft) ft/inches 2’3” 2’3” 1’9” 1’9” 0.42 0.42 Maximum draft (fully loaded), ft/inches 0’9” 0’9” 1’4” 1’4” from hull’s underside lowest point Engine recommended 18.4 18.4 29.4 29.4 Engine max...

  • Page 79: Standard And Optional Equipment

    Doubled draining system with two plugs and bailer ▪ Tough raised rubbing strake with splash guard ▪ SPORT VERSION: Steering console CS-01W (S370N) ▪ Steering console CS-03 with windshield and handrail (S420N) ▪ Mechanical steering system with steering wheel ▪ Silver Line S370N, S420N Owner’s Manual...
  • Page 80 TECHNICAL DETAILS DELUXE VERSION: CL-11 steering console with windshield, stainless steel railing ▪ Mechanical steering system with steering wheel ▪ SD-06 double seat with soft seat, seat back and stowage ▪ Bow locker removable cushion ▪ OPTIONAL EQUIPMENT: Removable sundeck with soft cushion (S420NL) ▪...

  • Page 81: Compartment Chart

    TECHNICAL DETAILS COMPARTMENT CHART 1. Bow locker 4. Rear open storage volume 2. Console storage 5. Drain well 3. Double seat locker Fig. 38. Compartment chart. Silver Line S370N, S420N Owner’s Manual...

  • Page 82: General Arrangement Of A Boat S370N (Nf), S420N (Nf)

    TECHNICAL DETAILS GENERAL ARRANGEMENT OF A BOAT S370N (NF), S420N (NF) Oar stowage Buoyancy inflatable tube Safety handle Inflation/deflation valve Bow grab handle Wooden seat Fiberglass hull Oar/paddle Rubbing strake with splash guard Oarlock Fig. 39. General arrangement of a boat S370N (NF), S420N (NF).

  • Page 83: General Arrangement Of A Boat S370Ns (Nsf), S420Ns (Nsf)

    GENERAL ARRANGEMENT OF A BOAT S370NS (NSF), S420NS (NSF) Fiberglass hull Buoyancy inflatable tube Steering console Rubbing strake with splash Rear lifting eye guard Fiberglass step end Safety handle Fig. 40. General arrangement of a boat S370NS (NSF), S420NS (NSF). Silver Line S370N, S420N Owner’s Manual...

  • Page 84: General Arrangement Of A Boat S370Nl (Nlf), S420Nl (Nlf)

    TECHNICAL DETAILS GENERAL ARRANGEMENT OF A BOAT S370NL (NLF), S420NL (NLF) Fiberglass step end Buoyancy inflatable tube Double seat Rubbing strake with splash guard Bow step plate Safety handle Bow locker Fiberglass hull Folding navigation arch Steering console Fig. 41. General arrangement of a boat S370NL (NLF), S420NL (NLF).

  • Page 85: Steering Console Components

    When your trip is finished, always remove the key from the ignition switch. This will prevent theft or unauthorized use of your boat. * - Please contact your regional Dealer for the installation of required components. Silver Line S370N, S420N Owner’s Manual...

  • Page 86: General View Of A Boat S370N

    TECHNICAL DETAILS GENERAL VIEW OF A BOAT S370N Fig. 43. General view of a boat S370N.

  • Page 87: General View Of A Boat S370Nf

    TECHNICAL DETAILS GENERAL VIEW OF A BOAT S370NF Fig. 44. General view of a boat S370NF. Silver Line S370N, S420N Owner’s Manual...

  • Page 88: General View Of A Boat S370Ns

    TECHNICAL DETAILS GENERAL VIEW OF A BOAT S370NS Fig. 45. General view of a boat S370NS.

  • Page 89: General View Of A Boat S370Nsf

    TECHNICAL DETAILS GENERAL VIEW OF A BOAT S370NSF Fig. 46. General view of a boat S370NSF. Silver Line S370N, S420N Owner’s Manual...

  • Page 90: General View Of A Boat S370Nl

    TECHNICAL DETAILS GENERAL VIEW OF A BOAT S370NL Fig. 47. General view of a boat S370NL.

  • Page 91: General View Of A Boat S370Nlf

    TECHNICAL DETAILS GENERAL VIEW OF A BOAT S370NLF Fig. 48. General view of a boat S370NLF. Silver Line S370N, S420N Owner’s Manual...
  • Page 92 TECHNICAL DETAILS LOADING PASSENGERS FOR S370N (S370NF) Fig. 49. Recommended seating arrangement for 5 persons.

  • Page 93: Loading Passengers For S370Ns (S370Nsf)

    TECHNICAL DETAILS LOADING PASSENGERS FOR S370NS (S370NSF) Fig. 50. Recommended seating arrangement for 5 persons. Silver Line S370N, S420N Owner’s Manual...

  • Page 94: Loading Passengers For S370Nl (S370Nlf)

    TECHNICAL DETAILS LOADING PASSENGERS FOR S370NL (S370NLF) Fig. 51. Recommended seating arrangement for 5 persons.

  • Page 95: General View Of A Boat S420N

    TECHNICAL DETAILS GENERAL VIEW OF A BOAT S420N Fig. 52. General view of a boat S420N. Silver Line S370N, S420N Owner’s Manual...

  • Page 96: General View Of A Boat S420Ns

    TECHNICAL DETAILS GENERAL VIEW OF A BOAT S420NS Fig. 53. General view of a boat S420NS.

  • Page 97: General View Of A Boat S420Nl

    TECHNICAL DETAILS GENERAL VIEW OF A BOAT S420NL Fig. 54. General view of a boat S420NL. Silver Line S370N, S420N Owner’s Manual...

  • Page 98: Loading Passengers For S420N (S420Nf)

    TECHNICAL DETAILS LOADING PASSENGERS FOR S420N (S420NF) Fig. 55. Recommended seating arrangement for 8 persons.

  • Page 99: Loading Passengers For S420Ns (S420Nsf)

    TECHNICAL DETAILS LOADING PASSENGERS FOR S420NS (S420NSF) Fig. 56. Recommended seating arrangement for 8 persons. Silver Line S370N, S420N Owner’s Manual...
  • Page 100 TECHNICAL DETAILS LOADING PASSENGERS FOR S420NL (S420NLF) Fig. 57. Recommended seating arrangement for 8 persons.

  • Page 101: Electrical Schematic Diagram

    TECHNICAL DETAILS ELECTRICAL SCHEMATIC DIAGRAM Fig. 58. Electrical schematic diagram with nav. lights on the navigation arch. Silver Line S370N, S420N Owner’s Manual...
  • Page 102 TECHNICAL DETAILS Fig. 59. Electrical schematic diagram with nav. lights on the bow step plate.

  • Page 103: Service And Maintenance

    A dedicated cover for the whole boat is the best protection against UV degradation of gelcoat and fabric of the tube. YOU SHOULD NOT USE STEAM BLASTERS AS THEY CAN AFFECT THE STRENGTH OF THE TUBE GLUED SEAMS. NEVER USE A SANDBLASTING MACHINE FOR CLEANING. Silver Line S370N, S420N Owner’s Manual...

  • Page 104: Cleaning

    SERVICE AND MAINTENANCE CLEANING Regularly clean your boat and make sure this is done before winterizing. ▪ For cleaning use household cleaner (non abrasive) and fresh water only! ▪ At all times keep the inflatable tube, vinyl and other boat parts free of any chemical spills, such ▪...

  • Page 105: Cleaning Of Tube

    While thoroughly wetting the surface, gently remove dirt, sand, algae, and other deposits. A soapy solution or household detergent can be used. Then, rinse it thoroughly with fresh water. Wipe gently off with a soft cloth. Silver Line S370N, S420N Owner’s Manual...
  • Page 106 SERVICE AND MAINTENANCE DO NOT USE THE FOLLOWING PRODUCTS TO CLEAN THE TUBE: Any cleaning device that might cause mechanical damage to the surface such as hard ▪ brushes, high-pressure washers, etc. Any cleaning agents (scouring agents or scrubbing powder), which will damage the surface; ▪...

  • Page 107: Plastic Preservation

    Rinse the sponge frequently in a separate bucket of water to prevent salt and dirt from moving around on gelcoat surface. Rinse the surface thoroughly with clean water and wipe it dry with a synthetic chamois or clean towel, just as you would wash your car. Silver Line S370N, S420N Owner’s Manual...

  • Page 108: Salt Removal

    SERVICE AND MAINTENANCE SALT REMOVAL If salt deposits are left on the gelcoat surface, it will look dull and stained even after polishing and waxing. To remove salt buildup, use the special agents or white vinegar. Rinse the surface thoroughly off with clean water when finished, and wipe dry with a synthetic chamois or clean towel.

  • Page 109: Cleaning Of The Underwater Part Of The Hull From Deposits

    ANTIFOULING HULL PROTECTION After the hull has been washed and well dried, apply an antifouling paint, if necessary. Before working with antifouling paint, read carefully the instruction for use it. Silver Line S370N, S420N Owner’s Manual...

  • Page 110: Upholstery Care

    SERVICE AND MAINTENANCE UPHOLSTERY CARE All upholstery of your boat is made from high quality coated fabrics. Keeping upholstery dry and clean will not only maintain its appearance but also extend its life. It’s a good practice to clean it once a week. For deeper cleaning use soft brush once a month. Remove stains as quick as possible, preferably within 24 hours.

  • Page 111: Acrylic Glass Windshield Care

    Do not use rough sponges or papers ▪ Do not use powdered abrasive cleaners ▪ Do not use harsh chemicals like petrol, acetone, ammonia-based cleaners, solvents (provoke ▪ cracks formation), alcohol and alcohol-based liquids, etc. Silver Line S370N, S420N Owner’s Manual...

  • Page 112: Airtightness Of The Inflatable Tube

    SERVICE AND MAINTENANCE AIRTIGHTNESS OF THE INFLATABLE TUBE The tube is considered to be airtight if it retains the recommended inflation pressure for 8 hours. ▪ As the inflatable tube is a primary safety feature - check the airtightness of your boat regularly. Inspect the condition of all inflatable components and remember that some natural release of pressure (see the information below) can occur.
  • Page 113 Any source of leakage must be properly repaired. Contact your Dealer for advice if necessary. DO NOT OPERATE YOUR BOAT IF THE PRESSURE DROP IN THE TUBE IS MORE THAN 20% PER DAY. Silver Line S370N, S420N Owner’s Manual...

  • Page 114: Maintenance Of Stainless Steel

    SERVICE AND MAINTENANCE MAINTENANCE OF STAINLESS STEEL We use only top-quality stainless steels, which are resistant to corrosion. However, this may not be permanent and maintenance is sometimes required so: o Avoid contamination and scoring to the surface. o Frequently wash with fresh water. o Once the surface is dry, apply some Vaseline or a dedicated grease for stainless steel and buff up to a high gloss by a rag.

  • Page 115: Regular Inspections

    Regularly examine your fuel system, replace old or damaged components and check the ▪ tightness of the fuel line connections. REGULARLY CHECK THE TIGHTNESS OF THE ENGINE TRANSOM BOLTS AS THEY MAY BE AFFECTED BY VIBRATION. Silver Line S370N, S420N Owner’s Manual...

  • Page 116: Trailering

    TRAILERING 7. TRAILERING The size and carrying capacity of the trailer should be suitable for the size and weight of your boat including the engine. Do not use a trailer that is too big or too small for your boat. Use a BUNK trailer.

  • Page 117: Boat Towing

    Close and secure all hatches and openings on the boat. Cushions must be placed in lockers ▪ or removed to prevent loss during transit. IMPORTANT NOTICE Do not trailer the boat with the overall cover in place, it is not designed for transportation. Silver Line S370N, S420N Owner’s Manual...

  • Page 118: Respecting The Environment

    ENVIRONMENT 8. RESPECTING THE ENVIRONMENT REMEMBER THAT RESPONSIBLE BOATING BEGINS WITH YOU! Respect your environment by applying the following basic rules: • AVOID CREATING EXCESSIVE WASH. • KEEP OUT OF DESIGNATED SWIMMING AREAS. • RESPECT ALL ANIMAL LIFE. • BE CAREFUL NOT TO OVERFILL THE FUEL TANK. •...

  • Page 119: Grand's Warranty

    This warranty applies to new Grand Inflatable Boats purchased from an Authorised Grand Marine Reseller. By using the Grand Inflatable Boats, the owner and helmsman understands and agree to undertake all instructions in the Grand Owner’s Manual, and agrees to all warranty and liability terms and conditions contained in this warranty. WARRANTY PERIOD Grand warrants Grand branded components from the date of purchase for a period of: 24 consecutive months for normal personal recreational use*.

  • Page 120: Warranty Coverage

    Inflatable tubes. ▪ This warranty is limited to repair, or at Grand option, replacement of parts suffering from any of the defects described above during the warranty period. The judgment of Grand is final concerning the extent of items covered under above warranty.

  • Page 121: Warranty Exclusions

    ▪ requirements, oil and lubrication, replacement of fuses or bulbs, linkage adjustments, filters and spark plugs, tyres, and other consumable items. Damage caused by not following procedures and recommendations in the Grand Owner’s ▪ Manual. Operating the craft beyond the design category.
  • Page 122 WARRANTY WARRANTY CERTIFICATE Name of Customer: __________________________________ Address: ___________________________________________ City: ______________ Post code: _______________________ E-mail_____________ Phone number: ___________________ WIN (Serial number):__________________________________ Signature: __________________________________________ Dealer address: _____________________________________ City: ______________ Post code: _______________________ Date of purchase: ____________________________________ Seller and customer acknowledge by signing that seller handed and customer received hereinbefore boat including standard (optional, if relevant) equipment and manual in English and that the boat is without evident defects.

  • Page 123: For Your Notes

    FOR YOUR NOTES...

This manual is also suitable for:

Silver line s420n

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