Candela C-8 2023 User manual

CANDELA®
C-8
Owners Manual

3
Welcome
Congratulations on becoming the new owner of a C-8! We hope that you will get
many years of joy from your unique electric hydrofoil craft. Make sure you receive a
full explanation of all systems from the person transferring the ownership to you.
For your own comfort and safety, ensure that you obtain handling and operating
experience before assuming command of the boat. This is especially important if this
is your rst boat, or if you are unfamiliar with this type of boat.
Candela will be pleased to provide you with any training needed.
Contents
Introduction ............................................................8
About this manual ....................................................................8
Receiving the boat ...................................................................9
About C-8....................................................................................9
C-8 Overview.....................................................................................10
Steering...............................................................................................11
The aft foil system...........................................................................11
The front foil system.......................................................................11
Height sensors.................................................................................12
Sonar depth nder (optional).....................................................12
Safety ......................................................................14
Intended use .......................................................................... 14
Responsibilities of owner and operator........................... 15
Disclaimer .............................................................................. 16
Safety warnings in this manual ......................................... 16
Safety symbols on the boat................................................. 17
Safety stickers on the boat.................................................. 18
Safety equipment on board ................................................ 19
Using the safety ladder and the swim platform (option).20
Checking the safety equipment................................................21
Safety on working deck ................................................................22
Safety on working deck during foiling....................................22
Hatches ................................................................................... 23
Passenger seating................................................................. 24
Mounting the additional seats to the safety rail (option) 24
Emergency procedures ....................................................... 25
Stop the boat in case of emergency .......................................25
Fire on the boat................................................................................26
Grounding..........................................................................................28
Flooding..............................................................................................29
Emergency steering.......................................................................31
Loss of propulsion..........................................................................31
Recommended equipment on board ............................... 32
Stability and buoyancy ......................................................... 32
Environmental awareness................................................... 33
No black water discharge at sea..............................................34
Retain household waste until onshore ..................................34
Considerations regarding noise and wake...........................34
Systems................................................................. 36
Draining system .................................................................... 37
Bilge pumps .....................................................................................38
Rinsing the anchor box drain.....................................................40

54
High-voltage battery system ............................................. 41
High voltage system overview...................................................42
Prolonging battery life span .......................................................43
Shore power electrical system........................................... 44
Galvanic isolator..............................................................................44
Charging fuse box and RCD (residual current device)....44
12 Volt electrical system ..................................................... 46
12V circuit protection....................................................................47
12V battery switch..........................................................................47
Navigation lights.................................................................... 49
Mounting the all-round light.......................................................49
Checking the navigation lights .................................................49
Cooling system ...................................................................... 50
Relling the coolant tank ............................................................51
Cleaning the cooling plates........................................................51
Freshwater system (optional) ............................................ 52
Activating the toilet.........................................................................53
Using the shower ...........................................................................53
Filling the freshwater tank...........................................................53
Emptying the freshwater tank....................................................53
Cleaning the freshwater lter ...................................................53
Black water system (optional) ........................................... 54
Emptying the black water tank .................................................55
Replacing the odor lter of the black water tank ..............55
Ventilation system ................................................................ 56
Heating the cabin ...........................................................................57
Defogging the windshield ..........................................................57
Audio system .......................................................................... 58
Pairing to the bluetooth audio system....................................58
Resetting the bluetooth audio pairing....................................58
Operating and navigating................................. 60
Read this before setting out to sea .................................. 60
Before leaving harbor....................................................................61
Visibility when steering ...............................................................62
Driving .................................................................................................62
Driver’s seat ........................................................................... 63
Throttle and speed ........................................................................64
Kill cord switch.................................................................................64
The steering wheel controls.......................................................65
The Settings menu.........................................................................67
The throttle speed bar ................................................................67
Error messages and notications in the user interface .68
Software updates............................................................................68
The Candela app.............................................................................68
Retraction modes ................................................................. 69
Navigating in rough seas.............................................................70
Driving the boat ..................................................................... 70
Starting the boat..............................................................................70
Switching retraction modes .......................................................70
Shutting down the boat................................................................71
Foiling .................................................................................................71
Anchoring, mooring, and towing....................................... 73
Cleats and lines ...............................................................................73
Anchoring .........................................................................................74
Mooring .............................................................................................74
Towing .................................................................................................75
When the boat is unattended ............................................. 75
Charging .................................................................................. 75
Charging the battery......................................................................76
Maintenance ........................................................78
Maintenance schedule ....................................................... 78
Checking the anodes ....................................................................82
Replacing the aft anode pair .....................................................82
Replacing the front foil anode pair .........................................83
Replacing the propeller anodes................................................83
Checking for any corrosion, damages, or wear..................83
Checking the high-voltage battery state of charge...........84
Checking the 12V battery............................................................84
Checking the function of the rudder and the struts.........84
Checking the steering...................................................................85
Adding corrosion protection on non-stainless steel metal
parts......................................................................................................85
Ensuring a smooth surface of the foil system and pod ..85
Cleaning the deck and cabin .....................................................85
Cleaning the foil system...............................................................85
Cleaning the hull ............................................................................86
Cleaning the height sensors ......................................................86
Cleaning the sonar depth nder ..............................................86
Painting the hull...............................................................................86
Replacing the 12V battery...........................................................87
Winterization .......................................................................... 87
Spring recommissioning .................................................... 88
Transporting......................................................... 90
Lifting ...................................................................................... 90
Lifting requirements ......................................................................91
Preparing for lifting.........................................................................91
Positioning the lifting slings .......................................................91
Trailering ................................................................................. 92
Trailering requirements................................................................93
Preparing for trailering..................................................................93
Driving with a loaded trailer........................................................93
Loading the boat onto the Candela trailer (optional) .......94
Unloading the boat from the Candela trailer (optional)...95
Troubleshooting...................................................96
Technical specications ...................................98
Design category..................................................................... 98
Builder’s plate ........................................................................ 99
Certication label (U.S. only) ...........................................100

76
Dimensions...........................................................................101
.........................................................................................................
101
Weights and loads...............................................................102
Safety equipment ................................................................102
Propulsion system...............................................................102
Target values.........................................................................103
Construction.........................................................................103
Component capacity ..........................................................103
Appendix............................................................. 104
Third-party manuals ...........................................................104
Spare parts............................................................................105
Warranty ................................................................................105
Wiring diagrams...................................................................105

98
Introduction
About this manual
This is the owner’s manual for the C-8 Daycruiser. It has been written to help you enjoy operating
your boat safely. It contains details of the boat, such as the supplied or tted equipment, its
systems, and operating instructions. Please read the manual carefully and familiarize yourself with
the boat before use. Ensure that everyone who will operate the boat reads this manual before use.
Keep this manual in a safe place and hand it over to the new owner if you sell your boat. If the
manual is lost, a copy can be downloaded or ordered from Candela.
This owner’s manual is not a course on boating safety or seamanship. It is not a detailed
maintenance or troubleshooting manual. For support or service, please contact Candela.
Receiving the boat
When receiving the new boat, remove the plastic wrapping and inspect the boat for any damage
while the carrier service are still onsite. Report any damage to the carrier service and contact
Candela. If there is no damage, proceed as follows:
1. Connect the boat to shore power. See "Charging" (page 75).
2. Turn on the main switch. See "12V battery switch" (page 47).
Recycle the plastic wrapping according to local regulations.
About C-8
The C-8 is an electrical hydrofoil speedboat. The front and aft foil technology enables ying
(foiling) half a meter above the water surface in speeds above 17 knots. The reduction of water
friction, combined with no transmission losses from the electric pod motor, makes the boat highly
ecient in driving range.
It is easy to extend and retract the foils in the user interface when conditions like speed and depth
change.
Dierent types of sensors measure the position, speed, and acceleration of the boat, to ensure
that a stable ride is maintained at all speeds.

10 11
C-8 Overview
The characteristics of the C-8 steering, propulsion and foils are described as follows:
A
C
B
D
2x
Q
D
A
O
I
J
L
K
M
H
G
F
N
P
Q
E
A. Aft foil system (AFS)
B. Steering wheel and throttle
C. Touchscreen with user
interface
D. Front foil system (FFS)
E. Electrical motor cables
F. Foil locking mechanism
G. Steering motor/actuator
H. Aft foil (wing)
I. Rudder connection box
J. Rudder
K. Retraction motor
L. Steering wire
M. Pod motor (propulsion unit)
N. Front foil
O. Front foil motor/actuator x 2
P. Front foil strut x 2
Q. Foil sacricial anode x 2
Steering
The C-8 has an electrical steer-by-wire system. There is no physical connection between the
steering wheel and the rudder. If the electrical steering system is disabled, only manual steering is
possible. Manual steering is done by rotating the rudder, by hand.
The aft foil system
The aft foil system contains components of the combined propulsion and steering system, such
as the pod motor and rudder.
The rudder connection box contains the electric connections and cables for controlling the pod
motor. Never pull or strain motor cables. This can damage motor functions.
The retraction motor generates power for retracting and extending the rudder. The dierent
retraction modes are set via the user interface on the touchscreen.
The steering motor and connecting steering wire transmits the movements of the steering wheel
to that of the rudder.
The pod runs very quietly, and idle running is silent. The driver must always know if the pod is on
or o. Check that the propeller LED by the throttle is turned o.
The front foil system
The front foil system is only extended during foiling mode, and fully retracted inside the foil garage
during other driving modes. An actuator motor on each foil strut controls the foil during ight.
The foil is equipped with two sacricial anodes, protecting the metal in the front foil system from
galvanic corrosion.
The front foil system is extended and retracted via the user interface, on the touchscreen .

12 13
Height sensors
The main function of the six height sensors is to provide input for foil control, measuring the
distance between the hull and the water. The height sensors must be kept clean in order to
function properly.
Sonar depth nder (optional)
The sonar depth nder indicates sea depth and cays, via the user interface. Depth is not
measured while foiling. The sonar depth nder must be kept clean in order to function properly.

15
Safety
14
Safety
The instructions in this manual must be read and understood before taking command of the boat.
For the safety of all passengers, pay special attention to the warnings.
Intended use
The C-8 is intended to be used as a recreational boat in accordance with design category C.
The C-8 may only be used in accordance with the information and instructions provided in
this manual, such as: safety, operation, maintenance, technical specications, and referred
information.
Responsibilities of owner and operator
It is the responsibility of the owner or operator to ensure that both local and national regulations
and laws are followed when handling the boat. The following list states responsibilities of the
owner/operator of the boat. This list is not exhaustive.
• Follow the sea rule of the road (COLREG).
• Ensure all local legislation is complied with, including requirements for lifesaving equipment,
driver’s licensing , and environmental regulations.
• Do not drive under the inuence of alcohol or drugs.
• Do not exceed the maximum number of passengers.
• Do not set out in a storm or very rough sea. Ensure that the anticipated wind and sea conditions
will correspond to the design category of your boat, and that you and the passengers are able to
handle the boat in these conditions.
• Any boat, no matter how strong it may be , can be damaged if not used properly. Inspect the
boat regularly and whenever there is cause for concern.
• Adjust the speed in rough seas or under obstructed view, or if there are boats, objects, or
people nearby in the water.
• Ensure that appropriate safety equipment is on board according to the type of boat, weather
conditions, etc. This equipment is mandatory in some countries.
• If the boat is equipped with a life raft, carefully read the relevant documentation.
• Ensure that the boat is properly maintained. Consider the deterioration that will occur over time
and due to heavy use or misuse of the boat.
• Ensure that you understand your boat's functions, limitations, and behavior.
• Ensure that all passengers can locate and operate the safety equipment, and are trained for
emergency maneuvers.
• Ensure that all passengers wear a life jacket in accordance with national and local regulations.

16 17
Safety Safety
Disclaimer
Candela is not responsible for any injuries and/or damage resulting from incorrect installation,
operation, maintenance, and/or modications of the boat.
Misuse can lead to danger for the passengers, driver, and environment, and can damage the boat.
Maintenance, repair, or modications must be carried out by qualied personnel. Modications
that can aect the safety characteristics of the boat shall be assessed, executed, and documented
by an authorized Candela workshop. Only use the recommended equipment and spare parts.
Candela cannot be held responsible for unauthorized modications.
Safety warnings in this manual
DANGER! Indicates an imminently hazardous situation that, if not avoided, will result in
death or serious injury.
WARNING! Indicates a potentially hazardous situation which, if not avoided, could result in
death or serious injury.
CAUTION! Indicates a potentially hazardous situation which, if not avoided, could result in
minor or moderate injury.
NOTICE! Indicates information considered important, but not hazard-related, for example,
relating to property damage or impaired operation.
Safety symbols on the boat
Safety
symbol Name Meaning Position on the boat
Warning
Indicates a hazardous situation
which could result in death or
serious injury.
• Power distribution unit
• High-voltage battery
Warning: Electricity Electrical hazard. Risk of life-
threatening electrical shock.
• High-voltage battery
• Power distribution unit
• Inverters
• Inside rudder head connection
box
Warning: Electrical
hazard.
Do not touch. Risk of life-
threatening electrical shock. • Power distribution unit
Warning: Hot surface Do not touch. Risk of burning. • On board charger and
DC/DC converters
No trampling
If the battery hatch is open, avoid
standing on the battery. This may
cause damage to the component.
• High-voltage battery
Read the manual
Read the instruction manual
before performing any work on
this component.
• Power distribution unit

18 19
Safety Safety
Safety stickers on the boat
The safety stickers are attached to the components, and visible only when the service hatches are
open. If a replacement safety sticker is needed, please contact Candela.
A-B
B
D
FG
E-G
C-D
A
E E E
C
H1-3 x
A. Rudder
B. Rudder head connection
box
C. Battery hatch
D. High-voltage battery
E. Sunbed hatch
F. Inverters x2
G. Power distribution unit
H. On board charger and DC/
DC converters x1-3
Safety equipment on board
The C-8 is equipped with built-in seat belts for all passengers and safety handles to hold on to while
underway.
An emergency switch connected to a kill cord is located next to the steering wheel. The kill cord must
be secured to the driver while underway. When pulled or released it will stop the boat.
In case of re, a 2 kg portable re extinguisher is located under the sunbed hatch. The storage space
under the sunbed hatch can also be used for a life raft (not included).
The boat is equipped with a safety ladder, which is accessible from both the deck and the sea. The
ladder can be combined with an optional swim platform.
A
E
E
D
6-8x
A
B
C D E
F G
G
A. Safety ladder
B. Safety rails x2 (optional)
C. Safety handles x4
D. Seat belts x6-8
E. Kill cord switch
F. Storage space for life raft
G. Fire extinguisher