Aerodynamic and Hydrodynamic Performance
design for Powerboats

• NEW LwrUnit drive options, now 62 OEM drives in dB

• NEW multi-engine option for 'Five motors' (number of drives) to address market growth of multi-engine setups

• ADDED Mercury Racing 150R/200R, Suziki 250AUN, McLaren/Honda M300 engine specs, now 4265 OEM engines in Motors Wizard dB

• NEW feature for ‘Optimize = Power’ analysis, auto-correct user-input trim angles in ‘Trim Set Range’ (Acceleration Model) if not a successful solution.

• UPDATED calculations for 'Motor Interference Drag' and optimized 'Multi-Engine spacing', new research

• IMPROVED ‘What’s Changed’ reporting (user-changed input fields)

• IMPROVED Report Wizard msg for comparative analysis of 'Compared Designs'

• UPDATED Report Wizard msg for ‘Steps Loading’, more information

• UPDATED Report Wizard msg for ‘Optimium Trim Angle’, more information

• ADDED icon to show when ‘Drive/Lower Unit’ selection is from OEM dB or user modified.

• UPDATED on-line HELP file 

• NEW option for ‘Trim Set Range’ (Acceleration Model), user increase of all trim angle settings.

• NEW on-screen design pictures for step dimensions, more descriptive

• ADDED status note on Performance Graphs when Comparing 2/3 Designs

• ADDED mini-Help button for 'Sponson Type'

• ADDED Estimate button for ‘CowlHeightRear’ dimension

• FIXED hidden 'TrimTabs' field controls

• MODIFIED cockpit drag calculations for 'streamlined' cockpit design cases

• FIXED 'Design Screen' updating for 'Final Velocity' after 'Start Velocity' changes.

• IMPROVED Report Wizard 'What’s Changed' msg; fixed some missing 'saved' inputs when Design Compare activated

• FIXED small Report Wizard printing errors -Refined 'planing surfaces wetted transition' analysis (LWetX)

• ADDED checks for UltraWide monitor and Multi-monitor use

• FIXED user message checkbox function on startup 'screen resolution' & 'printer setup' checks and 'Optimizaton=Economy' message [checkbox now cancels future message show]

• ADDED NEW standard design template in QuickDesign, 'Flat Bottom Skiff' now 20 designs total available

• IMPROVED formatting for '%Power' axis in Performance Graphs (Power)

• IMPROVED 'What Changed' info for 'FinalVelocity', 'VelocityInc'

• FIXED Report Wizard message for 'Low Aero Lift'

• UPDATED analysis of Lower Unit/Drive; with new research, including new calcs for 'MotorDrag', 'Torpedo Drag', 'Drive/Torpedo Angle', 'Resolved Thrust', 'Torpedo Lift', 'Torpedo induced drag'

• ADDED in Report Wizard, new msg when specified 'Strake Width' too small; new msg for '% Sponson/% Vee Surface Lift'; new msg to advise when ‘AutoFixBlowover' invoked (WAngle) to preclude 'blowover'

• ADDED field labels change if Drive Type 'Jet', 'Direct', 'Surface'

• ADDED 'Final Velocity' information to printed listing of Input values

• FIXED error printing Design Input listing (vertical line)

• ADDED in Report wizard, new information reported for Porpoising Analysis

• ADDED feature option to auto-adjust engine spacing when changing number of motors

• Fixed save file when PodDeadrise = zero (0 degrees)

• CHANGED in Report wizard info reported for Power levels (Economy Analysis) changed to %PowerRequired

• REVISED live warning msg for zero WAngle result

• UPDATED 'estimate' calc for 'AngleTorpedo’ when drive type is 'direct drive'

• UPDATED to Save Headwind/Tailwind simulation in user design dBase

• UPDATED 'Direct Drive', default dimensions, field captions, design picture

TBDP/VBDP Version 8.11 NOW RELEASED!

• NEW Performance Analysis feature determines local Lift Strake lift/drag contributions based on each determined local 'wetted strake’ conditions.

• UPDATED Motors Wizard dB to all 2024 OEM engines, including new Honda 350hp V8, Mercury Racing 'R Series' 500R/400R/250R/60R), Mercury Racing APEX Series (360/200/60), Mercury Verado 600hp/500hp V12, Verado 350hp/400hp V10; Yamaha XTO Offshore 450hp V8, OXE diesel outboards, Caudwell 300hp diesel, Cox 300hp diesel, Tohatsu, Suzuki, Honda, Yamaha, Yanmar, new jet drive outboards, more (now 4242+ OEM engine specs in dB)

• NEW feature applies 'estimate' values to Groups of inputs (eg: steps, cockpit, centerpod/pad, strakes, power eff’y factors, motor dimensions, trim tabs)

• NEW 'Whats Changed' Wizard feature on Performance Graphs shows design ‘changes’ for each of 2-3 compared designs

• ADDED 2 NEW cockpit design option ‘Wheelhouse’ & 'Bowrider' w/design info (now 16 cockpit style selections)

• ADDED 2 NEW standard design template 'RC Vee sterndrive' & 'Bowrider Vee sterndrive' (now 19 designs in QuickDesign dB)

• ADDED 4 NEW LwrUnit/Drive selections, 'RC Sterndrive', 'Mercury R-Drive-Sport', 'Ilmor-OneDrive’, 'Mercury OB SSM IV' (now 62 options in dB + manual user input)

• Revised 'Estimate' calcs for Podheight, Podwidth, Motorlength, LwrUnitLength, motor weight; Also revised for 'Strakewidth' now specific to tunnel or vee hulls. Added 'Estimate' button calcs for Trim Tab dimensions.

• NEW Performance Output data and Graphs showing ‘% Sponson/Vee Lift’ of total Hydrodynamic Lift.

• Revised Propeller recommendations in Performance reporting to better reflect small prop sizes (eg RC boats)

• NEW Wizard Report msg advises performance of each lift strake through velocity range.

• Revised Wizard Report message for 'Low aero lift' w/Vee Hulls, more explicit

• Fixed display of user design 'changes’ to always display field highlights

• Fixed auto dimensioning when changing Vee-Pad selection.

• Updated Wizard Tutorial feature

• Fixed refresh of MotorDescription summary after save

• Revised Performance Graph ‘Power’ to show ‘%PowerRequired’ instead of ‘%PowerMax’ (for Optimize=Economy)

• Revised 10 Wizard screens to allow user to move windows

• Revised Wizard Report msg for ‘What’s Changed’ shows data changes for each ‘Design Compare’ case.

• Revised Wizard Report msg to improve comments for  LwrUnit/Drive drag vs engine height s

• Updated on-line HELP file

• ADDED new feature to export aerofoil dimensions CSV file (user request)
• NEW Design File 'Sort' to view 'tunnel hulls' or 'vee hulls' designs (user request)
• Added OEM weights for 'OutdriveWeight' selections
• Revised user message for Windows DPI scaling and UHD screen resolution
• Revised Wizard Report notes, 'HeadWind' / 'TailWind' feature.
• Added check for default location of 'aero dimensions' dB w/auto recovery
• Added check for print Report to prevent orphaning lines
• Fixed Performance Graphs for 'Power' and Wizard Report, corrected values when metric units

• NEW Aero Lift coefficient calculations based on new 2023 research re: influence of AR, T/C
• UPDATED 'Motors Wizard' dB; including new 'Honda 350hp V8', now 3695+ OEM engine specs in dB
• UPDATED Lower unit/drive design details dB, including 'Merc R-Drive' lower unit/drive design, now 58 drive specs in dB
• ADDED new cockpit option 'Canopy-Offshore', now 15 cockpit template options
• Modified estimate button calc for 'MotorHeightCowl' (exposed engine cowling/fairing)
• Modified estimate button calc for 'VeeAeroThickness'
• Changed input variable behaviour for 'SponsonLength2'/'VeeLength2' based on active values
• Changed auto trigger for 'more decimals' setting (all user settings still available for all designs)
• Changed Propeller recommendation reporting in Performance reports to better reflect small prop sizes (eg RC boats)
• Improved error correction for user input fields if null values entered
• Updated on-line HELP file

• Added 'Mercury SM HD544' Lower unit/drive design details, now total 57 drive specs in dB.
• Added Performance Report Wizard msg for 'steps deadrise' if non-optimal
• Changed calculations for 'optimum step height/step angle' recommendation
• NEW Advanced analysis for Steps influenced by local variable deadrise in  step regions for more accurate local step loading.
• Updated viewed Performance Graphs for DCowlMotor, Steps, CLW conditions.
• Revised 'Maximum Practical Velocity' msg in Performance Report Wizard to enhance recommendations for all conditions.
• Updated on-line HELP file

• UPDATED 'Motors Wizard' db to include new Mercury Verado V10 5.7L 350hp, 400hp; Yamaha 450 V8 5.6L outboards, OXE diesel outboards (150hp-300hp), now 3693+ OEM engine specs included.
• Updated file date format in BoatDesign manager to allow sorting recently saved files by 'seconds' too.
• Added NEW Performance Output data and Graphs for Vee-Pad optimizing, showing % Pad/Pod Lift of total Lift.
• Added Performance Report Wizard msg to show all drag contributors to 'Cockpit Drag'.
• Added NEW standard design 'Fishing Vee with Cuddy Cabin', now 17 quick design templates
• Fixed Performance Graph captions for 'PowerRequired' to show corrected PMin values.
• Enhanced Cockpit drag calculations for Center Console/Cuddy Cabin configurations, changed input fields
• Added Performance Report Wizard msg for Center Console/Cuddy Cabin cockpit configurations
• Added Performance Report Wizard msg to note if significant 'cockpit cavity drag'
• Updated Performance Report Wizard msg with advanced description of 'Vee-Pad Lift %' through operating velocity range, including recommendations for pod deadrise, pod height, pod width.
• Fixed a few input selection dropdown boxes to prevent accidental user manual keystroke input
• Reorganized Performance output data screens listing and color-coding.
• Updated on-line HELP file

• UPDATED new 'Motors Wizard' database to 2022 engines, now with 3685+ OEM specifications

• Updated Wizard Tutorial screen images to latest versions

• Added new msg to Report Wizard to provide detailed explanation of Economy Analysis results

• Added new help button for 'LwrUnitLength'

• Added new menu option for 'How Fast does my boat go?'

• Added on Input screen, display label '100% Power' when Optimize=Angle analysis is selected; 'Min % Power' range when Optimize=Economy is selected.

• Updated printing msg for 'Print to PDF' OR 'Microsoft XPS Document' options

• Updated Report Wizard title msg to clarify Velocity Analysis for 'Test Velocity' or 'Max Velocity'

• Revised Report Wizard 'Trim Angle' msg to note when 'Max Trim Required' is NOT at Max Velocity in range.

• Fixed msg info in Report Wizard for 'Wetted Surface', when fully wetted throughout entire velocity range

• Fixed msg in Report Wizard for 'Step Loading' (reported incorrect max velocity)

• Changed msg in Report Wizard for 'HUMP Transition' to prevent misleading 'WAngle' msg during low velocity conditions.

• Updated 'Estimate' calcs for 'Aerofoil type', 'SponsonLength/VeeWetLength', and 'Wing Chord'.

• Updated ToolTip for 'StrakeLocation'

• Fixed '% Power' graph (Optimize=Economy) scale min/max values

TBDP/VBDP Version 8.10 NOW RELEASED!

• BIG NEW FEATURE Economy Performance Analysis Optimize Option='Economy'; Optimizes for Lowest 'Power' and Lowest 'Trim Angle' at each velocity through range. (user request) [see video ]

• Added 2 NEW standard designs 'Skater 24 Outboard' & 'Vee Hull Utility Bay', now 16 Std Designs to choose (user request)

• Revised validation check for 'Step Lengths', minimum step angle

• Refined calc's for est'd 'Step' dimensions, est'd Engine Spacing (for multi-engine), est'd centerpod/pad dimensions, est'd Strakes dimensions in 'QuickDesign Wizard'

• Added Performance Graphs for 'Optimize=Economy' mode

• Revised Performance Graphs to show 'Max Power' baseline (Optimize 'Economy' & 'Power' modes)

• Improved Performance Graph (Power) to show '% Power' used (Optimize 'Economy' & 'Power' modes)

• Added NEW Report Wizard performance message for 'Accuracy' setting; for high 'Wetted Surfaces'; for 'Short Step' Length(s)

• Changed 'Auto 1-2-3' event sequence to prevent defaulted re-set of user-setting 'MinSponsonWetLength'/'MinVeeWetLength' (user request)

• Added NEW input variable 'PMinEconomy' for user-set minimum Power setting (used with 'Optimize=Economy')

• Revised calculation for 'Static YCG' location

• Added 'Hull Type' notations to 'Standard Designs' in 'QuickDesign Wizard'

• Changed CalcPerform 'progress bar' and animation clip to show improved status

• Revised CalcPerform error message recommendations when no solution available.

• Updated 'Wizard Tutorial'

• Added user input validation to 'QuickDesign' Wizard

• Revised dB version (V8.10.0); previous dB versions will auto update all older design files

• Added NEW 'Direct Drive' (inboard engne) drive option

• Expanded Report Wizard messages for 'Step Design' re: 'Optimum Step Height'

• Added 'estimate' buttons for 'LWetSponsonMinimum'; 'Transmisison Effy'; 'Propeller Slip'; 'Hull Effy'

• Added NEW Report Wizard messages for 'Above-Chine Sprayrails', 'Below-Chine Sprayrails', 'Pod Sprayrails', Cockpit Selection vs Aero Lift

• Added design pictures for 'Variable Deadrise Fore'

• Updated Input Wizard forms design

• Added NEW Report Wizard messages for 'Wetted Surface' when vee/sponson surfaces become 'unwetted'; and when veepad/centerpod becomes 'unwetted'

• Added Windows 11 detection

• Improved error handling for 'Microsoft Print to PDF' processing

• Fixed displayed metric units for Deadrise Wizard

• Improved Report Wizard performance message for Tunnel Hull with Center Pod

• Fixed some label resizing after metric/imperial units changed

• Fixed auto calc of CenterPod/VeePad angle and height; added data validation

• Added design picture for VeePad angle dimensions

• Updated HELP file/manual

• Revised user data Validation messaging methods for high DPI, faster screen refresh

• Automatically UPDATES all older dBase design file records.

• NEW input feature to auto set calculate 'MAX VELOCITY' or 'TEST VELOCITY'

• NEW design file 'Sort' to view only 'non-standard' designs

• NEW standard design 'RIB Vee',now 15 std designs to choose in Design Wizard

• User input validation for all hull 'deadrise' inputs

• UPDATED Motor Wizard to all NEW 2021 motors, now 3430+ OEM engine specifications, including NEW Mercury 600hp V12 Verado, Mercury Racing 360 APX Racing outboards, more

• NEW Performance Output data Results and Graphs for Steps Load Distribution for each step surface

• NEW feature for user input width for 'Center Console'; expanded aerodynamic calculations for 'Center Console' cockpit drag

• Improved 'estimate' calc for 'WidthRearFairing' when multiple engines

• Corrected calc for 'estimate' for 'motor weight' if Metric

• Added NEW 'estimate' button for 'CowlHeightFront', 'PodDeadrise', 'Vee Pad Width'

• Added auto close of TBDP/VBDP previous instance running

• Fixed bug with prgm shutdown left bits in memory, corrected

• NEW performance Optimization (Power) Option in 'Accel Model' to automatically maximize acceleration

• Reformatted Wizard forms visual and DPI aware

• Modified Titlebar colors to reflect user defaults (Win10 version update)

• Fixed bug in label position on input screen#4 (misplaced during previous update)

• Fixed bug in Step Design descriptions reported in Wizard Performance Report

TBDP/VBDP Version 8.9 NOW RELEASED! 

• NEW fully automated design dB updating routine for all new dB version releases

• Added NEW expanded Performance Report narratives

• Updated Performance Results screen presentation

• Added updated aerodynamic lift & drag analysis for centerpod cases

• Added specs for Mercury Racing 360 APX F1 Racing outboard to 2020 Motor Wizard dB

• Added NEW Performance data and Graphs for 'XCGDiff', compares 'XCFDynam' vs 'XCGStat' resolved force locations, add'l measure of Dynamic Stability

• Added Refined Report Wizard messages for Steps design

• Added Enhanced Porpoising report message, determines when centerpod/pad design contributes to porpoising onset

• Added NEW feature routine to view PDF Sample Reports from TBDP/VBDP menu

• Fixed reporting error in SWet for full-wet condition

• Fixed reporting error in LWetFore for lower velocities

• Added Enhanced TrimTabs warning messages and Report Wizard narrative

• Added report reminder if user turns off 'Active Input Validation'

• Added to QuickConvert Wizard, 'Imp Gal to Litres to US Gal'

• Revised prgm 'Check Update' routine for higher software revision version labels

• Revised install check and user options for Regional Codes compatibility

• Added install check for Windows DPI setting and Virtualization

• Updated default screen font settings for familiarity to all Windows OS versions

• Fixed bug causing error with UHD/4K monitors; (Windows 32k limit)

• Revised installation checks for screen resolution and DPI settings, added user option 'Dont-show-me-this-again' for screen, DPI, printer settings

• NEW HELP file/manual 

• NEW UPDATED Motor Wizard dB, including 2020 engine specs, now 3200+ OEM engines

• NEW Design Feature for 'Delta'/triangular shaped vee-pad or tunnel center-pod option;

• NEW Design Feature for specifying spray rails on tunnel center-pod or Vee-Pad and performance results of spray drag.

• Modified xCPPod/xCPPad analysis for Dynamic Stability.

• Improved 'What's Changed' messages for Power/Propulsive efficiency details

• Upgraded CheckUpdates reader

• Added Help buttons for SponsonLength and LWetSponsonMinimum

• Fixed 'ExportToCVS' to ensure both numbers and text values

• Improved Performance Results screen presentation management, cleanliness

• Fixed bug in data input validation check

• Added Estimate button for WINGCHORD dimension

• Added detail to Report Wizard header info

• Improved Report Wizard narrative for 'Maximum Practical Velocity' message

• NEW 'Center of Pressure' Performance Output data and Performance Graphs for sponson/vee and pod/pad planning surfaces

• Added analysis and reporting for Effective Wetted Lengths for Multiple Step surfaces, refined effects on Dynamic Stability

• Revised Trim Tab hydrodynamics, Lift/Moment calcs, Dynamic Stability calc, messages

• Added default value for Multiple Engine spacing if no user entry

• Updated Report Wizard header information

• Added picture button for tunnel or vee dimensions view

• Added Report Wizard caution messages for multiple step design angles

• Pictures now enlarge with animation expansion

• Added HELP section with tips on software setup for PWC/Watercraft (Jetski) analysis

• Expanded 'What's Changed' feature to compare design to last save version

• Expanded HELP file/manual

• NEW Enhanced Porpoise Analysis, new complex analysis accounts for affect of multiple stepped hulls, centerpod, vee-pad, on critical porpoising limit calcs.

• NEW Help 'Search' feature (work-around for existing MS bug).

• Added 'Mercury 50hp', 'Yamaha 50hp', 'Evinrude 50hp' Lower Unit design details, now total drive specs in built-in dB.

• Modified tab key movement to be compatible with latest Win10 OS.

• Fixed validation message for 'LWetMinimum' (units).

• Changed update of displayed 'Max Velocity' on input screen, when units are converted.

• Added explanation to Input 'Data Validation' messages re: action options.

• Added auto-selection of Active Data Input Validation after design compile from 'Quick Design Wizard' to ensure all data is checked.

• Added test and error msg for 'Optimize = Velocity' option when user-specified WAngle is too small to generate valid balanced performance results, including optional auto-reset of WAngle.

• Fixed units conversion in DMotor calculation when metric units used

• New HELP files and manjual

TBDP/VBDP Version 8.8 NOW RELEASED! 

MAJOR UPDATE

• Completely new Performance Output screens, now 4 full pages of performance output, over 600 data points, improved readability, better grouping

• New updated Motor Wizard engine database, now includes + OEM specs, including extreme 2019 Mercury Racing 450R V8, Mercury Racing's 400ROS, 300R & 250R, Mercury Verado 4.6L V8 engine line, Evinrude G2 300 V6, Yamaha XF425 V8, Seven Marine's mega 627 V8, Suzuki DF350A, and ALL the new 2019 OEM outboard and sterndrive engines.

• Added new enhanced 'Step Performance Analysis' and new Performance data showing 'Wetted Length' of each effective Step surface, including ‘unwetted’ stages.

• Added new Performance output data for 'Effective Planning Surface Width' (bWidth) for sponsons, vee, centerpod, veepad.

• Added new 'Lower Unit Interference' drag analysis for multiengine installations; shown in to Wizard Performance Reports.

• Added new Performance output results and graph for 'Distance Travelled' ['Acceleration Analysis']

• Added new analysis for centered locations (CofPressure) for all Lift forces acting, including Sponson/Vee, CenterPod/VeePad, Trimtabs; shown in Wizard Performance Reports

• Added new Lower Unit analysis and info re: Torpedo Resolved Lift and Induced Drag when engine incremental trim angle is specified

• Added new output data graphs in Performance Graphics presentation screens (now 57 graphs available)

• Added 'Merc M6 drive', 'Evinrude 2/3cyl', 'Seven Marine GT', 'Merc Verado L6', 'Volvo SX', 'Volvo IPS', 'Volvo DPS', 'Mercruiser Bravo 3X' lower unit design details, now total 59 drive specs in built-in dB.

• Added 10 more performance narrative subjects to Wizard Performance Report 'POWER' summary

• Added 'Propeller Sizing' summary to Wizard Performance Reports

• Added user feature to turn OFF Trimtabs (auto-retraction) at specified speed.

• Added feature switch to allow user to turn off Trimtab warning messages

• Added 'auto-estimate' button for 'motor/engine weight' if user manually enters HP (not reqd when using 'Motor Wizard' OEM specs; 'auto-estimate' button for set velocity for 'auto-retraction' of Trimtabs; 'auto-estimate' button for 'Multi-engine spacing'.

• Enhanced descriptions given in Wizard Performance Reports for Lower Unit Drag, including spray drag and multi-engine interference drag.

• Improved 'Quick Design Wizard' with more detailed auto-modifications for user designs based on standard designs

• Fixed drive selection dimension assignments in 'Quick Design Wizard' for lower unit selection

• Fixed drive unit dimensions set from dB if user-design in Metric Units.

• Added new menu option to 'Save data' for 'Compare Designs' to main Perf Data screen (feature also still available from Performance Graphs screen). 

• Revised Validation (active input and file save validations) routines for improved data checking.

• Added color highlight to selected performance output screen results data

• New dbase 'tbdpdat5.mdb' format with more Performance Output variables

• Updated TBDP/VBDP data conversion program, automatically converts older data formats to new Ver8.8 db format

• Added Help Tutorial for 'How to Compare Performance of Design Modification' in online Help documents/manual

• Updated and expanded Help Wizard Tutorial with new sample screens and descriptions

• Revised Acceleration Analysis, more accurate integration algorithm, better results for acce'n/elapsed time

• Updated 'What Changed' feature to provide more info, for any Optimize method

• Fixed input fields in 'Accel Model' wizard to highlight each field when changed by user.

• Updated illustrations for tunnel jet drive, vee jet drive

• Added User-defined input trim angle (TWAngle) values in printed Input data report

• updated Help documents

• Revised hydrodynamic planning 'bWidth' calculation for complex deadrise, improves CLW accuracy

• Added new Wizard Report for 'Lifting surfaces performance', including monitor of 'bWidth' wrt 'chine width'

• Updated algorithms for Aero Drag (aero profile drag, cockpit drag, cowlings drag)

• Added 'Design Compare' feature for Optimize = "Power" option, (including Time, Acceleration); compare design results for up to 3 different/modified designs

• Added Estimate/Help buttons for PowerEffy; inboard, outboard, jet drives, engine height

• Added notification in Wizard Reports for 'below planing velocity'

• Updated 'create desktop link' function (Win10)

• Updated design input for 'LwrUnitHeight' dimension for different hull styles, vee/pad/sponson/pod

• Expanded text output for 'MotorDescription' in export to CVS file (and fixed truncation)

• Expanded Wizard Report notes for 'LwrUnitHeight' relative to effective running surfaces

• Updated Help documents with new features

• Added Estimate buttons for Wing Thickness, Vee AeroThickness, Tunnel Height/Vee Deck Height

• Added user "What's Changed" notification feature so user can see when engine selections have been changed

• Updated software install to accommodate recent changes in Win10 (build 1803)

• Fixed validation check for LwrUnitHeight (metric correction)

• added 'SevenMarine' lower unit design details to dB

• added auto checking routine to prevent duplicate file name saving

• enhanced HTML Help on-line document

• NEW feature for user export of input/output data to CVS file format.

• NEW Optimum Trim Angle analysis

• Updated user screen/print font selection routines

• Fixed bug in text-reporting total Weight/units conversion in Wizard Report

• Updated Performance Graph formatting

• Expanded Performance Report

TBDP/VBDP Version 8.7 NOW RELEASED! 

"MAJOR UPDATE"

• NEW analysis for STEPS, with more user step design definition, more accurate performance prediction of functional wetted areas, force locations, Dynamic CG locations

• added Estimate/Help features for Step Height, Forward Step

• NEW dB format [tbdpdat4.mdb], updated TBDP_Convert program for all previous dB's

• Fixed bug in Acceleration Wizard (input) display

• Enhanced Report messaging for Step performance including design recommendations, step performance, wetted/non-wetted

• NEW sort feature for 'Standard Designs'

• NEW feature compares THREE designs in Performance Graphs

• Ehanced Reporting for 'Compare designs'

• Now user can account for tunnel hull 'aerofoil' location offset

• Enhanced HELP module

• enhanced Porpoise Regime reporting

• added Optimum Trim Angle reporting

• added step angle display on Input screen for multiple step inputs

• added Estimate/Help buttons for multiple Step inputs

• expanded step design reporting and recommendations, including optimum Step height reporting

• fixed printing error (steplength1) in previous versions

• added reporting for LwrUnitHeight specified above waterline

• added input screen notation for 'gallons/litres of fuel' conversion from fuel weight (lbs/Kg)

• enhanced reporting for identification of 'Maximum Limiting Velocity' and 'Maximum Practical Velocity'

• fixed 'overflow' error caused if improper user VariableDeadrise inputs

• added departure analysis for Dynamic Stability, and influence on Max Practical Velocity 

• Honda lower unit specs added

• added reporting of Lifting Strakes performance

• enhanced Dynamic Stability reporting

• improved reporting for 'Maximum Limiting Velocity'

• added JET drive options

• Fuel volume conversion for Fuel Weight input

• enhanced Step design recommendations

• enhanced Hump Transition reporting

• passenger appendage aero drag added

• enhanced auto Report wizard info/detail

• new graphics on input screens

• NEW standard design option for "Vee hull without Pad"

• NEW - Upgraded entire TBDP HELP system to MS HTMLHelp-now compatible with Win7/8/10 Help systems; full context-sensitive Help, one-click help buttons on every screen, content Help Search features.

• Variable deadrise, Notched Vee-Pad/Center-Pod features

• NEW added "WScreen w/RearCowl" option for cockpit design

• added engine/motor cowl height, width now automatically calculated

• UPDATED Motor Wizard; added Selva outboard and Cummins, Catepillar, MTU, Yanmar inboard engine specs

• revised lower unit drag calculation to include Leg drag if applicable

• Improved Report Wizard message for Porpoise susceptibility prediction

• Corrected error when using design Compare feature

• corrected issue when saving design file

• corrected fault in display of Sponson Drag % Report Wizard

• NEW screen layouts, NEW input variables, more performance analysis, output data/graphics, more reporting

• NEW 2016 Motor Wizard update, now with over 2250+ OEM engine choices, including new Evinrude G2, new Mercury Racing 400R, new Ilmore V8's, Jetdrive Outboards, Yamaha 350hp V8 Outboard, Evinrude V6 E-Tec's, New Mercury 350hp Sci Verado and Optimax ProXS engines and SevenMarine 557 outboard.

• NEW input variables and NEW 5 screen input format

• Animated 3D Chart display for Lift/Drag component contributions through Velocity range 

• NEW feature allows variable deadrise of sponsons or vee surfaces.

• NEW feature automatically optimizes trim angles for elapsed TIME and ACCELERATION analysis

• NEW feature to show extra decimal accuracy (useful for small hull designers and RC users)

• NEW automated analysis of 'Hump- Zone' transition velocity and 'Force Moment' dynamic stability, explains both in custom Performance Analysis Report.

• NEW input variables 'Air Temperature','Air Humidity' and 'Water Temperature' to allow user to account for environment variations

• NEW input variable 'Angle Torpedo', for when lower unit has relative trim angle (regardless of WAngle)

• NEW input variable 'Width Rear Fairing' to allow for unique aft fairing sizing

• Enhanced analysis adjusts lift/drag and coefficients for changes in air temperature, altitude, humidity, water temperature and water type (fresh/sea)

• NEW Performance Output data info; 'DCowl Motor' shows drag contribution of outboard engine cowling and 'Force Moment' information for dynamic stability analysis

• Printed reports to file or printer queue now show user unique file names

• Reduced Input module loading time and improved screen flash presentation with reduced flicker

• NEW database format adds more input variables, output info, reduced file maintenance

• Updated TBDP_Convert routine (Ver 2.1) automatically converts all design file data from all previous dB versions to new TBDP/VBDP V8.6 dB

• Improved auto screen resizing for all screen types/size/resolutions and printing.

• Corrected error when selecting "Two Steps" for very small hulls

• Fixed Win7 UAC error that sometimes caused file save issue.

• Updated HELP files

• Enhanced Lift/Drag components display with animation

• NEW "Estimate" buttons can auto-input estmated input values if user does not have info

• NEW "WhatChanged" feature on Design Input screens that lists input fields 'changed' during session

• NEW new input variables for Motor Cowling sizing, Outdrive Weight, CockpitLength

• Revised aero drag for cockpit and cowling, increased accuracy of aero drag for outboard engine cowling

• NEW standard design options for 'Bass Boat with center console'

• NEW cockpit/cowling options "None with RearCowl" and "Center Console"

• NEW Wizard messages for auto design reports

• Improved data input validation checks

• Revised upper limit wetted surface values shown on output screen and Results graphs

• Added msg for vee-pad support lift, Corrected Lift Strake message error, Updated Porpoise calc

• Revised aero drag for Cuddy Cabin option, New Cockpit W/windscreen option

• Corrected DAero/CDAero algorthim

• NEW Lower/Drive Unit drag analysis, includes Torpedo drag, skeg drag, leg drag, induced drag and spray drags.

• Added mini-help buttons for each input frame

• Added LowerUnit specs for Ilmor Indy stern drive

• Enhanced Performance Wizard info for XCGDynamic, SprayFac, AeroDrag

• User requested scaling, units and decimal floating

• Improved Win7 installation cleanliness

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