O P T I M I Z I N G S Y S T E M MARK II version 1.2 USER'S GUIDE
Contents
1. wish A Pee oP AAA reese Bee rese KI 335 POSTTTON ARRIVAT MODE La A A Be RS a E NA OE R E T ANAS ee RR 12 3 6 D ES TANCE ARRT VAT MODE id rl y a e Sable we BO Se ed We Se Fw 14 3 7 AUTOMATIC CALCULATION OF THE TIME OF ARRIVAL ccc eee eee eee eee eens 15 4 ROUTE PLANNING 111 ie ae a ee ee ee eee ee eee eee eee eee ee ea e 16 4 1 THE ROUTE PLANNING MENU es nro e atar Spaced eee E Mare po ld eee dt 16 Ai ROUTE sAGT TVAT EON gee betas wd od oe yee Ca EG Bice Boe Dn ne OSE Bk cE ER eh 16 4 2 lt 1 THE ROUTE REY io bedded e PAA a PRE we Dek Bee Bee ER Rat 17 4 3 THE ROUTE PLAN JIN OPERATION uscar es bled te OAH SB a a 18 ASIGNE RA Tn A tt A A A oe Bia AS eh te ba oe on ES NS Naik AA E 18 AN 32 SWITCHING ROUTE EEG 0 id keya e A de e ee IE RG 18 4 33 MANUAL SPEED CORRE CT LON Sa it bs Eee A A da joel Bas as 18 4 3 4 IMPORT ROUTE PLANS AND WAYPOINTS 2 ccc ccc oo o o o 18 B MORE oido ot a a a a RER 19 Dil MARKING FOR PRINTOUT as rystede ares eb ea to at a da its Ns 19 BEDS MENU LAA RS ES AS AS O ets oy eR KEN er om 19 Pea STIMULATION m rro rd ices AE A AAA O RAE e 20 pAs DES TANCE RECORDERS ta at a ip E ods AA A A Bn eR 20 Bb LOGGING DATA FROM THE VOYAGE os remar a iaa ab 21 5 6 ERRORMESSAGES DURING OPERATION oo ooooooooo ooo ooo eee eens 21 1 INTRODUCTION SEAPACER is an advanced tool for controlling the speed of a vessel in an optimal way with res2. vents happen The time of day and a numerical value are stored in the logfile and can later be printed in a loglist ona connected Seapacer PC Example Press lt PRINT gt ENTER LOG MARK 2 3 lt ENT gt TIME AND MARK HAVE NOW BEEN STORED In the loglist this will appear thus 081230 MARK 2 3 5 2 MENU IMENU This key is used get the menu showing all the additional functions available MAIN MENU 1 ROUTE PLANNING 6 TESTING 72 SETUP 8 CONFIGURATE 9 SYSTEM MENU 0 EXIT MENU CHOOSE 0 9 The various menu options are described in separate chapters 20 5 3 SIMULATION SIMU This mode can be used for demonstrations and LATE educational purposes It can only be invoked while in HANDLE CONTROL that is when the SEAPACER is not in control Different operational conditions and control modes can now be simulated No controlsignals will be transmitted from the SEAPACER in this mode By pressing the SIMULATE button the following menu is displayed 09 MULATION SETUP SIMULATE ON OFF i WATER DEPTH 100 M CURRENT 0 5 KNOTS COURSE 0 0 DEG MAIN ENGINES STB 1 l I I MAIN ENGINES PORT SHAFT GEN STB 0 SHAFT GEN PORT 0 TIME CONST 60 SEC EXIT MENU ODOOWMAANAUBW
3. PLAN 5 route parameters 6 WAYPOINT REGISTER I l I 8 IMPORT FROM PC 9 OPTIMIZE NOW 0 EXIT MENU I I CHOOSE 0 9 The route plans should have been prepared in advance on the connected Seapacer PC Refer to 4 2 ROUTE ACTIVATION A route is activated by the Seapacer PC route 8 Press lt MENU gt optimizer user s guide for details following steps 1 ROUTE PLANNING in Seapacer PC 1 2 Press 3 Press 4 Press plans E IMPORT FROM PC if the route plan has been changed JO 1 SELECT ROUTE and select one of the available route SELECT ROUTE I 1 Fredrikshavn Oslo 2 Moss Nord Fredriksh 3 G K via Fladen 4 T G SPEED POS DW E 6 T G Speed Pos H 7 T G SPEED POS DW 8 T G SPEED POS DW 9 TEST 0 EXIT MENU I I CHOOSE 0 9 Press 0 to exit the menu 5 Pre weathe The ro done i 17 ss 2 VOYAGE PARAMETERS and enter departure time and r conditions ute is divided into three parts A B and C this is n the route set up stage performed on the Seapacer PC and may be viewed in 4 ROUTE PLAN from the ROUTE PLANNING menu in Seapapcer PC VOYAGE PARAMETERS I PART A B E 1 WIND 0 0 3 0 0 0 2 DER O 130 0 3 CURRENT 0 0 0 0 1 0 4 DIR 0 0 80 l I I 5 DRAUG
4. TIME OF ARRIVAL must be tried out by repeated inputs To simplify this particular application of DIST ARR and POS ARR an automatic procedure has been developed If the desired speed is stated as response to the question ENTER TIME OF ARRIVAL OR MEAN SPEED the time of arrival is computed and is displayed on the screen whereupon it can be accepted by responding lt Y gt lt ENT gt Example fed in at 10 00 Press lt DIST ARR gt ENTER TIME OF ARRIVAL EG 1805 OR MEAN SPEED 20 0 lt ENT gt ENTER DISTANCE IN NM 40 lt ENT gt ARRIVAL 12 00 Y N Y lt ENT gt ENTER CONSUMPTION LIMIT L NM OR JUST ENTER 0 lt ENT gt Corresponding example with POS ARR Press lt POS ARR gt ENTER TIME OF ARRIVAL EG 1805 OR MEAN SPEED 20 0 lt ENT gt ENTER WAYPOINT NUMBER 12 lt ENT gt ARRIVAL 13 12 Y N Y lt ENT gt ENTER CONSUMPTION LIMIT L NM OR JUST ENTER O lt ENT gt 16 4 ROUTE PLANNING 4 1 THE ROUTE PLANNING MENU Route planning is controlled from the ROUTE PLANNING menu which is reached The following men by pressing lt MENU gt and then 1 ROUTE PLANNI u will appear NG ROUTE PLANNI NG 1 SELECT ROUTE 2 VOYAGE PARAMETERS 3 RUN ROUTE 4 ROUTE
5. changes in spee SEAPACER can be ordered to keep the sp passing deep water revolution allowed MODE This function can b press lt MENU gt 8 3 5 2 9 STEP UP DOWN stretches The only speed of revolutions to d To prevent this the d of revolution fixed when control of speed of is then through CONSUMPTION L H MODE and POWER e turned on and off i 5 to change the defau n via the menu system lt value The operator may in some circumstances require a very fast speed reduction or increase The up arrow and down arrow keys may be se They force an rpm pitch step up or down fixed percentage of current power outtake the used for this purpo corresponding to a percentage is set i n the POWER LIMITS menu lt MENU gt 8 4 7 10 3 CONTROL MODES 3 1 SPEED MODE Type the desired speed knots and press lt ENT gt SPEED This can be combined with an upper limit for the fuel consumption If no limit is wanted simply press lt ENT gt without typing a value SEAPACER will maintain this speed until a new command sets a new value or the given upper limit is reached Increases and decreases in speed are always very slow to save fuel and protect the engines The command should therefore be given in good time before the speed is to be reached Example Press lt SPEED gt ENTER REQUIRED SPEED 18 lt
6. switch which may be depressed to electrically disconnect the Seapacer from all rpm and pitch control The bulb inside the switch is lit when the Seapacer is IN CONTROL i e controls the main engine rpm and propeller pitch 1 2 INPUTTING VALUES For all input of values from the keyboard the following apply Answer questions appearing at the bottom line of the screen Submit the input by pressing lt ENT gt By pressing lt ENT gt as a response to a question the default value already in the answer area is submitted to the system This value is often a sensible choice A mistyped digit or character can be erased by the lt button Pushing lt CE C gt once while typing an answer to a question erases all input typed so far Pushing lt CE E gt twice cancels the question all together It is also possible in dubious cases to cancel all buttons pressed so far even in the middle of a question or while feeding in new values The question area on the screen disappears after approximately thirty seconds To answer yes or no queries from SEAPACER use the keys lt Y gt Yes or lt N gt No followed by the lt ENT gt User input in this manual appears in bold style 2 BASIC FUNCTIONS 2 1 THE SCREEN The SEAPACER is normally always in CONTROL MODE In this mode it can be told to control the speed of the vessel and the automatic logging of data from
7. ENT gt ENTER CONSUMPTION LIMIT L NM 100 lt ENT gt Press lt AUTO LIMIT gt After this command the screen looks as follows xxx SIMULATE xxx SPEED M DE C LIMITS gt 1994 04 13 23 32 39 19 6 BY 1662 8030 SPEED BT L NM L H POWER KH LEG ROUTE TIME 00 03 00 03 DIST 0 9 0 9 LITRES 88 88 L NM 100 100 19 1 8565 SPEED HT 19 9 19 9 SPEED WT HIGH LIMIT 14000 ARRIVAL 18 0 398 900 LEFT NM SET SPEED LIMIT 100 LOW LIMIT 900 DELAY MIN 7 5 105 105 100 5 8 5 8 1 14 0 6 0 20 57 37 71 N 011 40 00 E HANDLE RPM DEPTH CORR SLIP CURRENT TRIM LATITUDE LONGITUDE Y OS OF OBE SS SPEED BT DEPTH POWER lt MH gt L NMx 10 RPMx10 25 cccccosecccccscccccccccopocccccscccccccseccccocgoeccccccccccccoccccccoccc heccccecccccccosccccccogoeccccsccceccscocceccccccgeccccccccccccccsoscecooo rrr ee See Tee 11 The vessel will now attempt to reach a speed of 18 0 knots as long as the limitations on fuel consumption and power output are not exceeded When lt AUTO LIMIT gt is pressed three adaptive limits are put into effect CONS LIMIT LOW POWER and HI CONS LIMIT automatically becomes 98 GH POWER L MIT set upper limit This upper limit dynamically set CONS LIMIT HIGH POWER LIMIT is assigned the value 8565 hp 1 nm that is just below the 100 1 nm is shown below the that is somewhat o
8. HIGH LIMIT WPO2 Fredriksh ang boj CTE 0 00 NM BEARING 251 3 DEG ARRIVAL 00 02 940414 19 0 110 900 BERT a SET SPEED LIMIT lt L NM gt LOW LIMIT DELAY 8 MIN 8 2 108 108 100 0 0 0 0 1 18 0 5 57 36 76 N 011 39 65 E HANDLE RPM DEPTH CORR SLIP CURRENT TRIM LATITUDE LONGI TUDE p 5s _p s SPEED BT DEPTH POWER MH L NMx 10 RPMx10 25 cccecccopocccccscccccscscccccccgeccscoccccccccccccccccopocccccsccccccoccccccsogoccccocccccccocccccccccgeccccocccccccosoccccooo rere Pee I eee eee CTE means original lin Cross track error betw n the destination and th POS ARR command was issued The were to keep the current speed during adjusted in such a way so as ted limiting combines to inhibit up during parts of the speed delay as much as possibl LOW POWER and HI the speed the delay wil remain Th is of course DELAY field displays the delay that Ei GH POWER L MIT ing trip to distan sched posit sp schedu ce led arrival only a bad qualit the logsignal from d necessary to reach le is continuously updated travel the shortest dist Updating is not The distance ion information available from ty signal Ll however done If the stat the waypoint 153 and signifies the distance to the the rest add five CO is information Whe
9. HT 5 60 Mi 6 DEPART 19 00 940320 ARRIVAL 23 00 940320 O EXIT MENU l I CHOOSE 0 6 The speed profile will be computed when you exit by pressing 0 5 Pre 6 Pre ss 4 ROUTE PLAN to check the resulting speed profile SS 3 RUN ROUTE to start the route plan or go back to 5 to correct the input values 4201 THE ROUTE KEY ROUTE The lt ROUTE gt key gives a faster and easier way to perform the above descri bed procedure to start a route plan Follow the instructions on the screen and update the departure time Exit t i e a Pressi result lt MENU gt ir E current draft and wind values he menu by pressing 0 The route plan will now be optimized speed profile will be calculated ng lt ROUTE gt while a route plan is running gives the sam as entering the sequence lt 1 gt ROUTE PLANNING lt 4 gt ROUTE PLAN he current route plan will be listed on the screen 18 4 3 THE ROUTE PLAN IN OPERATION 4 3 1 GENERAL The position and point of time is synchronised with the route plan when the optimization is performed The exact delay is automatically computed and evened out on the remaining legs of the route Legs with constant speed as control mode are however not influenced This calculation and way of evening out the delay are repeated at each subsequent switchpoint and also periodically every 10 minutes and when new values fo
10. NE CHOOSE 0 9 The default start values for simulation are shown and may be altered in the menu Simulation is turned on and off with menu choice 1 During simulation no logging of the actual data from the voyage will be done Instead all simulated values and commands are stored on logfile number 0 5 4 DISTANCE RECORDERS The two distance recorders are reset automatically each time the propellers start to move The left one is also reset at start of a route leg or a manually given DIST ARR or POS ARR command 21 5 5 LOGGING DATA FROM THE VOYAGE The SEAPACER stores all interesting data sampled All commands are also logged This data can be used later for documentation analysis statistics and so on The logging interval can be set to any period between one minute and one hour In this installation it set to 1 minutes The data from each voyage is stored on logfiles consecutively numbered from 1 and upwards The logfiles are overwritten ina rotational way that is the oldest file is overwritten first The maximum number of logfiles is 30 For comparative analysis from a great number of voyages the log files are automatically transferred to the connected PC equipped with SEAPACER PC a comprehensive program system for voyage analysis and route planning 5 6 ERRORMESSAGES DURING OPERATION Errorsituations are indicated by red messages on th
11. R i i L NM L H IARR IARR KW Answer the questions and press lt ENT gt See below for a more detailed description of each control mode That the SEAPACER has control is signalled both by having a headline such as SPEED MODE and by turning on the small lamp inside the controlswitch In addition the desirable speed and fuelconsumption is written in a dark green colour 2 3 DEACTIVATION SEAPACER can be deactivated in several ways e With the HANDLE button The HANDLE button should normally be used to ensure a controlled transition to manual mode Press lt HANDLE gt Put the manoeuvring handles into the designated position Press lt Y gt and then lt ENT gt e With the WH Control Handles The SEAPACER is immediately deactivated by pulling the WH Control handles under level 5 The SEAPACER will remain deactivated until activated even if the handles are taken above this level again e With the Controlswitch Put the controlswitch in OFF out position The light inside the controlswitch will then be turned off e Disconnect Seapacer mains power Disconnect the SEAPACER from the the mains power by switching off the switch on the front of the central unit Note that the all ways but the first may cause a jolt in the main ngines due to a rapid change in the number of revolutions The deactivation of the SEAPACE
12. R causes the lamp inside the controlswitch to be turned off the coloured headline on the screen to change to read HANDLE CONTROL and the dark green coloured numbers showing the set values for speed and fuel consumption to disappear 2 4 CHOICE OF CONTROL MODE For easy use of the SEAPACER simply choose one of the five available control modes SPEED CONS L M CONS L H DIST ARR or POS ARR Having chosen a suitable control mode press the corresponding button on the keyboard and respond to the questions pressing lt ENT gt after each response Failing to press lt ENT gt will cause the current control mode to persist The ROUTE function facilitates automatic alternation between different control modes on different parts of the voyage 2 5 CONSUMPTION LIMIT A value for the CONSUMPTION LIMIT L NM is requested in control modes SPEED POS ARR and DIST ARR The significance of this value is as follows Consumption limit is given in litres per nautical mile and signifies an upper ceiling that never should be exceeded Apart from in rare transitory cases the SEAPACER never sets a speed that would cause this ceiling to be violated This function allows a maximum yet safe level of power to be drawn from the main engines if appropriate values are input The operator can input a new value for the limit at any time If 0 ze
13. Seap A N G DY o ch M MARK version 1 2 USER S GUIDE 960412 TABLE OF CONTENTS 1 INTRODUCTION oi eco a Bebe ea ke ea ne Busco a e I aen e sees 2 Tol SPAR KEYBOARD sonic ir ias o o Dee Ogres Sul eo ee when eM are ea e 3 1 52 INPUTTING VALUES mer A A A Sea oe en a ene ean its Se eet a es AN at S 4 2 BASIC FUNCTIONS LEE ab eee a Bey hile a sene GE 5 2216 THEY SCREEN ado da tacked paro yr ad whe a tar Tepes dee at 5 BSD ACTIVA TTON RR A Bees dd AS ice se eS er hs CORR DBs eee Fee le DE 7 2573 DEACTIVATION ia o a Sb ee Bs Ben ed do RS ee a a 7 Reh CHOTLCH OE CONTROL MODE A ad Beta SAS S E E R REE E E ARS Sato 8 205 CONSUMPTION LLIMLD 02 puen a eed pE Were bashes be eb ma n eee bases Hee E ated een 8 26 CHANGE LETTER Bed ed Sos Wa iss ed REAR ea Ads ne ARE OBA BRS eB AR 8 SN AUTO TEM ET a alle fa e s Baba te Bn ay ey be Ba Te bis 9 2 08 CONTROL ON DEEP WATER incon tees eo A A sls AS RRR TS NRE ale BRR tala 9 229 STEP UP DOWN vars era ENN dro ad Vowel andes tao pido zii ot 9 3 CONTROL MODES saa SND a RES ta a as 10 3 715 SPEED MODEA aage SA RY OE RRS ES ha tid a Bd ei NE ORE D 10 3 2 CONSUMPTION AENM MODE ss raa ale Spas A ata 11 33 CONSUMPETON TAE MODE ego tts A Se aS A eRe ES BRS ORES ARS ee 11 3 074 POWER KW MODE cao ts dt pa Gee
14. e is updated continuosly There is no updating the five last minutes ahead of estimated arrival time When 0 5 nm remains of the stated distance the SEAPACER automatically changes control mode to SPEED MODE using the last set speed as the new desired speed The distance is computed from the logsignal speed relative to ground Example Press lt DIST ARR gt ENTER TIME OF ARRIVAL EG 1805 OR MEAN SPEED 0020 lt ENT gt ENTER DISTANCE IN NM 40 lt ENT gt MEAN SPEED 18 1 KNOTS OK Y N Y lt ENT gt ENTER CONSUMPTION LIMIT L NM OR JUST ENTER 0 lt ENT gt After this the screen looks like the following xxx SIMULATE xxx DISTANCE ARRIVAL amp LIMITS 1994 04 13 22 07 15 20 7 102 2062 10275 SPEED BT L NM L H POWER KW LEG ROUTE TIME 00 01 00 01 DIST 0 4 0 4 LAR o ag 20 2 14000 Aa 28 ad SPEED WT HIGH LIMIT ARRIVAL 00 20 940414 18 1 900 LEFT 40 0 NM SET SPEED LOW LIMIT DELAY 15 MIN 7 8 106 106 100 1 0 1 0 1 19 0 5 57 36 80 N 011 39 29 E HANDLE RPM DEPTH CORR SLIP CURRENT TRIM LATITUDE LONGITUDE e R BE E SPEED BT DEPTH POWER lt MH gt L NMx 10 RPMx10 25 The field DELAY displays the delay that would ensue if the present speed were to be used for the rest of the voyage 15 3 7 AUTOMATIC CALCULATION OF THE TIME OF ARRIVAL If the remaining distance as well as the wanted average speed is known the
15. e screen They vanish when the next command is invoked The following messages may appear ERROR IN CONS SENSOR The signal from the fuel meter was distorted If it happens frequently the malfunctioning must be rectified Spurious distortions are filtered by SEAPACER and does not affect operation ERROR IN LOG SIGNAL The signal from the speed logg was distorted If it happens frequently the malfunctioning must be rectified Spurious distortions are filtered by SEAPACER and does not affect operation PASSIVE DUE TO RPM MISMATCH The propeller speed commanded by SEAPACER and that measured deviates too much May be caused by a malfunctioning rpm pickup or an incorrect calibration in the control system for the propeller In this situation SEAPACER will apply a constant signal to the main engines Weak signal from the navigator is indicated by a question mark in front of the latitude value In these cases the POS ARR cannot be started An already initiated POS ARR leg switches over to position calculation based on the speed log is is thus not interrupted
16. ics mode which gives the operator on line curves with speed fuel trim etc The data from the vessel s operation during the transit is stored in the SEAPACER for later analysis on the connected PC Various kinds of lists and charts can be produced enabling for instance long term analysis comparative evaluations before and after a reconstruction maintainance at the shipyard etc For educational purposes a simulation function is provided inside SEAPACER t is built up around similar parameters to those of the vessel in question 1 1 THE KEYBOARD The layout of the keyboard is as follows SPEED CONS CONS i L NM L H poo i POWER POS DIST i KW 1 i ARR i i AR i i ROUTE LIMIT AUTO zu 44 I E UE HAN PRINT SIMU MENU DLE 1 LATE i O E er Bor S p ORO i 1 po oo i LA PE LA REN 74 i io by oS po i bR a a T 9 i 1 po call i Pe eck DD TN Oh BES EN I I I I I I Henceforth the pressing of one of these buttons is indicated by enclosing the name of the button in angle brackets thus lt SPEED gt or lt ENT gt A pushbutton switch is also placed on the right side of the keyboard This is the CONTROL SWITCH and should normally always be pressed It is a safety
17. n MODE considered it is because the updating is not before the giving arrival When running a rou next rout even if the given waypoin the last speed as to be reached if the dist using speed rel passed on a great ter distanc te plan leg when th is reached the SEAPACER switches to SPEED th received the dist lative to the ground the connect new set valu tance is less than 0 5 nm of tion great minutes before vessel when th would ensue if the vessel the voyage to minimise the values an increase in The CONS t according to the The vessel is supposed always tance to the destinat the last the waypoint is comp circle uted from ted navigat tor If tance is estimated and time The waypoint is is sti time th set values 1f 11 frozen t performed later than five minutes the Seapacer automatically switches to POS ARR target waypoint has been passed the nearest distance is greater then 0 5 nm 14 3 6 DISTANCE ARRIVAL MODE DIST ARR State the arrival time and distance to chosen waypoint and press lt ENT gt The desired maximum limit for fuel consumption is given in litres per nautical mile in response to the request from SEAPACER It will now use the lowest speed possible while still arriving in time The speed necessary to travel the desired distanc
18. n relation to the parameters set for the load controller While pitch optimizing the values will vary slowly A minus between the values for starboard and port conveys a decreasing correction increasing pitch while a plus signifies an increasing correction decreasing pitch An optimal level is found when neither a plus or a minus appears The CORR fields are left blank when in HANDLE MODE i e when the Seapacer is not in control XXX SIMULATE xxx HANDLE CONTROL 1994 04 14 00 43 34 18 5 83 1529 Tar SPEED BT L NM L H POWER KW LEG TIME 00 07 DIST 2 5 LITRES 239 18 g o L NM 99 SPEED WT 19 4 SPEED WT ARRIVAL LEFT DELAY MIN 7 5 105 105 100 1 08 0 5 0 20 57 39 28 N 011 40 00 E HANDLE RPM DEPTH CORR SLIP CURRENT TRIM LATITUDE LONGI TUDE A 5 _n 5 SPEED BT DEPTH POWER MH L NMx10 RPM 10 2 2 ACTIVATION The controlfunction of the SEAPACER can be activated only after both the WH Control Handles are above handle level 5 5 and the Controlswitch is in the ON in position Note that depending on the shape of the combinatorcurve the area for pitch control may be limited if the handles are not in the full ahead position while SEAPACER is in control SEAPACER is activated by selecting one of the following control modes POP BED CONS ICONS IDEST AJ POS POWE
19. o limit is deact selected by one of new limits has been If a power reading the CONSUMPTION LIMIT ivated after a new control mode has been the buttons SPEED DI ST ARR or POS ARR or when input with the CHANGE LIMIT command on the basis of the the power limits submitted via attempted The limits are used in an at fuelconsumption an is available or the power level is estimated automatic adaptation to the CHANGE LIMIT command is also around the power n The function will t power caused by arb Lasting changes in ded at the moment to hereby prevent sudden itrary variations in the conditions cause and or increased to after a preset peri the new conditions POWER and HIGH POWE tempt to put a window uphold the set speed changes in the output of the conditions at sea the window to be moved attain the set speed The window will then that prevail The or R are however never For an example pl 2 8 CONTROL ON DEEP On certain routes o be seen before reac this results in gre ase refer to chapter WATER n deep water disturb hing shallow waters od of time stepwise decrease until adapted to iginal values for LOW violated Ja Lo ances on the logsignal can In SPEED control mode at variations in the compensate for imaginary
20. pect to its economy and navigation between destinations During operation any of a number of operational modes may be selected SPEED Fixed speed L NM Fixed fuel consumption per nautical mile 1 nm L H Fixed fuel consumption per hour 1 h POWER Fixed power from engine POS ARR Adapt speed to planned arrival and waypoint DIST ARR Adapt speed to planned arrival and distance ROUTE Describe which mode to use at what time during the voyage The alternation between modes is done automatically by SEAPACER SEAPACER automatically optimizes the speed distribution between the route legs Legs with different depth and or weather conditions will then run at different speeds in order to minimize the total fuel consumption SEAPACER minimises the momentary fuel consumption by maintaining an optimal ratio between the propeller s pitch and speed of rotation SEAPACER controls the main engines in a gentle way One may for instance limit the speed by which acceleration and retardation is done This causes the main engines to operate more smoothly than when run manually and thereby avoiding unnecessary rapid termic changes in the load The load limits set in the loadregulator are never exceeded SEAPACER is easily configurated for different types of connected equipment and individual needs by a user friendly menu system SEAPACER has an extensive graph
21. r current or wind are entered in 2 VOYAGE PARAMETERS from the ROUTE PLANNING menu Optimization way also be forced from the ROUTE PLANNING menu choice 9 OPTIMIZE NOW 4 3 2 SWITCHING ROUTE LEG A switchpoint is activated when a preset number of consequtive read outs from the navigator indicate that the distance to the switchpoint is increasing It is therefor important to place the switch points where the navigator signal is reliable 4 3 3 MANUAL SPEED CORRECTIONS To manually adjust the speed of the vessel on a leg after the route plan has been activated press lt SPEED gt and give a new value for the set speed The route plan will then not be interrupted but only changed on the current leg 4 3 4 IMPORT ROUTE PLANS AND WAYPOINTS To fetch all new or modified route plan from the connected SEAPACER PC computer select 8 IMPORT FROM PC from the ROUTE PLANNING menu The waypoint register will also be fetched from the PC if it has been altered A route plan is finished automatically when the last defined switch point is reached It is also finished if the operator press any of the keys lt HANDLE gt lt SPEED gt lt CONS L H gt lt CONS L NM gt lt POWER KW gt POS ARR gt or lt DIST ARR gt 19 5 MORE 5 1 MARKING FOR PRINTOUT PRINT This button is used to mark the loglist when special
22. ro is given or if only lt ENT gt is pushed when CONSUMPTION LIMIT L NM is requested there will be no upper limit 2 6 CHANGE LIMIT Change limit is used to alter the consumption and power limits chosen when either of SPEED DIST ARR or POS ARR was selected CHANGE LIMIT The following questions appear on the screen ENTER CONSUMPTION LIMIT L NM 0 MEANS NO LIMIT ENTER LOW POWER LIMIT KW 0 MEANS NO LIMIT ENTER HIGH POWER LIMIT KW 0 MEANS NO LIMIT If the given high limit on consumption conflicts with the LOW POWER LIMIT the latter is given precedense That is CONS L NM may be exceeded 2 7 AUTO LIMIT AUTO LIMIT is an adaptive funct AUTO LIMIT sets the C above the reached the consumption cau large changes in th of a more permanent automatically be in ion that automatically ONSUMPTION LIMIT 2 litres nautical mile actual consumption when a steady state has This function prevent s instantanous peaks in sed by headsea currentsetting wind sudden e depth of the sea e character the upper TE If the disturbance is limit of consumption will creased The new limit will not however be allowed to exceed the original level of Aut
23. s to avoid sudden changes in the speed of revolution due to attempts to keep the power level constant 12 3 5 POSITION ARRIVAL MODE State the arrival time and the number for the selected waypoint and press lt ENT gt If it desirable to have an upper limit on the fuelconsumption litres per nautical mile enter it in response to the request from the SEAPACER The SEAPACER will now attempt to use the lowest possible while still arriving according to schedule IPOS ARR Example Press lt POS ARR gt ENTER TIME OF ARRIVAL EG 0805 OR MEAN SPEED 0002 lt ENT gt ENTER WAYPOINT NUMBER 2 lt ENT gt MEAN SPEED 19 KNOTS OK Y N Y lt ENT gt ENTER CONSUMPTION LIMIT L NM OR JUST ENTER 110 lt ENT gt The waypoint number are put into one separate register that may be inspected and modified by the operator The register can be accessed by pressing lt MENU gt lt 1 gt ROUTE PLANNING lt 6 gt WAYPOINT REGISTER If 0 zero is typed as an answer to the question ENTER WAYPOINT NUMBER the latitude and longitude are requested by two questions The screen now holds the following picture xxx SIMULATE xxx POSITION ARRIVAL amp LIMITS i 1994 04 13 22 06 37 20 8 10 2176 10880 SPEED BT L NM L H POWER lt KHW gt LEG ROUTE TIME 00 00 00 00 DIST 0 2 0 2 LITRES 19 19 L NM 110 110 20 3 14000 SPEEN ENT SPEED WT
24. the voyage takes place In CONTROL MODE the picture on the next page is on the screen An annotated picture is inclued in the beginning of this document The screen is divided into two parts the upper showing measured signals and input set values and the lower part showing a sweep diagram with speed fuel rpm etc The large digits over the SPEED BT text show the bottomtrack signal from the log The digits over the SPEED WT text show the water track speed if such a signal is connected An estimated value for the current 0 5 is shown on the mid line A positive value signifies that the current has the same direction as the ship The value for CONS L NM shows the consumption of oil per nautical mile The water track log signal is if connected used in the calculation of L NM The sampled values shown in the mid row on the screen may vary somewhat depending on which measuring instruments that are connected to the SEAPACER system If there is no power meter connected an estimated value is shown The size of the slip is an estimated value since no instrument measuring the pitch of the propeller is connected The digits over the text CORR show the correcting signals for the propeller pitch for starboard and port port to the left A zero corresponds to an uncorrected pitch Increasing values signify a damped pitch i
25. ver the actual power level LOW POWER LIMIT is set to be the same as the power level stated as the default lowest permissible information about the Refer to separate chapters for more limits 3 2 CONSUMPTION L NM MODE litres per CONS State the desired fuel consumption in L NM nautical mile and press lt ENT gt stay at this level of consumption until The SEAPACER will another command is issued A certain variation is allowed to prevent sudden unmotivated changes in the speed of revolution The fuel consumption L NM is computed from readings from the fuel meter and the log of the speed through the water if available This is a measure of the resistance th navigating the sea 3 3 CONSUMPTION L H MODE vessel is facing while This mode is replaced by POWER MODE in some installations CONS State the fuel consumption in litres per hour and press L H speed of revolution 3 4 POWER KW MODE lt ENT gt The SEAPACER will stay at this level of of consumption until another command is issued A certain variation is allowed to prevent sudden unmotivated changes in the POWER State the desired power in kilowatts and press lt ENT gt KW The SEAPACER will maintain this level of power output until another command is issued A certain variation is tolerated so a
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