Update

Author: forest-apps

content/dp_capability_tool/_index.md

@@ -14,7 +14,7 @@ title: "DP Capability Tool"
 
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-## ⭐ Key Features at a Glance
+## Key Features
 
 
 {{< cards cols="1" >}}
@@ -51,7 +51,7 @@ title: "DP Capability Tool"
 
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-## 🧮 Analysis Functions
+## Analysis Functions
 
 ### Feasibility Calculation
 Determine whether a valid thrust allocation solution exists for a given environmental condition while minimizing total power consumption.
@@ -61,7 +61,7 @@ Assess the **maximum environmental loads** a vessel can withstand while maintain
 
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-## ⚙️ DP System & Thruster Modeling
+## DP System & Thruster Modeling
 
 ### Comprehensive Thruster Configuration
 Model a wide range of thruster types, including:
@@ -76,7 +76,7 @@ Apply robust thrust allocation algorithms to realistically distribute thrust for
 
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-## 🌊 Environmental Load Modeling
+## Environmental Load Modeling
 
 ### Multi-Source Environmental Loads
 Accurately model external forces acting on the vessel, including:
@@ -88,7 +88,7 @@ These loads form the basis for both feasibility and capability calculations.
 
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-## ⚠️ Failure & Scenario Analysis
+## Failure & Scenario Analysis
 
 ### Failure Mode Definition
 Simulate DP system performance under defined failure conditions, such as:
@@ -100,7 +100,7 @@ This supports intact and failure case evaluations in accordance with DP practice
 
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-## 📸 Screenshots
+## Screenshots
 
 ### Project-Based Workflow
 ![Project Management View](./images/Snipaste_2026-01-13_09-35-46.png)
@@ -120,7 +120,7 @@ This supports intact and failure case evaluations in accordance with DP practice
 
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-## 📊 Visualization & Results
+## Visualization & Results
 
 ### Capability and Feasibility Plots
 Generate clear visual outputs, including **rose plots**, to illustrate vessel performance under different load directions and environmental conditions.
@@ -130,7 +130,7 @@ Inspect analysis results interactively to better understand thrust utilization,
 
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-## 🧰 Engineering Utilities & Rules
+## Engineering Utilities & Rules
 
 ### Built-in Rule Utilities
 Includes calculation utilities aligned with industry guidance and classification society practices, such as:
@@ -141,7 +141,7 @@ These utilities assist with consistent and standards-aware analysis.
 
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-## 🖥 User Interface & Project Management
+## User Interface & Project Management
 
 ### Project-Based Workflow
 Organize all models, configurations, and results within a structured project system.
@@ -156,7 +156,7 @@ This design improves efficiency and usability for engineering workflows.
 
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-## ✅ Typical Applications
+## Typical Applications
 
 - DP capability assessment for offshore vessels  
 - Operability and environmental limit evaluation  

content/dp_capability_tool/tutorials/_index.md

@@ -6,12 +6,4 @@ sidebar:
   open: true
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-This section covers some advanced topics of the theme.
-
-<!--more-->
-
-{{< cards >}}
-  {{< card link="multi-language" title="Multi-language" icon="translate" >}}
-  {{< card link="customization" title="Customization" icon="pencil" >}}
-  {{< card link="comments" title="Comments System" icon="chat-alt" >}}
-{{< /cards >}}
+One tutorial is provided to help users become familiar with the user interface and the typical DP capability analysis procedures.

content/dp_capability_tool/tutorials/tutorial1/_index.md

@@ -6,7 +6,7 @@ sidebar:
   open: true
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-# Tutorial: DP Capability Analysis for an Offshore Wind Turbine Installation Vessel
+# DP Capability Analysis for an Offshore Wind Turbine Installation Vessel
 
 ## 1. Introduction
 
@@ -104,9 +104,10 @@ Failure modes are organized into **failure mode groups**, each representing a sp
 
 The user must:
 
-1. Create a failure mode group with a meaningful name  
-2. Define one or more failure modes within the group  
-3. Specify which thrusters are **active** or **failed** in each mode  
+1. Create a failure mode group with a meaningful name
+2. Define one or more failure modes within the group
+3. Specify which thrusters are **active** or **failed** in each mode
+4. Specify azimuth thruster thrust loss factor curves and restricted azimuth sectors
 
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@@ -117,7 +118,18 @@ For azimuth thrusters, additional constraints can be applied:
 - **Thrust factor curve** over the full **0–360°** range  
 - **Multiple forbidden azimuth zones**, where thrust is restricted or not allowed  
 
-These settings allow realistic modeling of mechanical, structural, or operational limitations.
+These settings allow realistic modeling of mechanical, structural, or operational limitations. 
+
+DNV-ST-0111 and the ABS Guide for Dynamic Positioning Systems provide detailed guidance on how to account for thrust loss factor curves and forbidden zones.
+
+In this tutorial, the thrust loss factor for **Th1** is set to 0.9 over the full 360° azimuth range, with a forbidden zone defined between 71° and 109°.
+
+The thrust loss factor for **Th2** is identical to that of **Th1**, while its forbidden zone is defined on the opposite side, ranging from 251° to 289°.
+
+The thrust loss factor curve is presented in the right-side plot, and the forbidden zones are marked on the azimuth thrusters in the thruster position view.
+
+![Thrust loss factor curve and forbidden zones](./images/ThrustLossFactorForbiddenZones.gif)
+
 
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