Teori Bangunan Kapal: Topik 3 - Ukuran Utama Kapal (Ship Principle Dimension)

Summary

This video provides an in-depth explanation of key ship measurements and principles. It covers essential terms such as Draft, Beam, Freeboard, Waterline, and Deadweight, along with detailed descriptions of various ship dimensions like Length Overall (LOA), Length Between Perpendiculars (LPP), and the significance of lines such as the Forward Perpendicular (FP) and After Perpendicular (AP). The video also explains how these measurements relate to ship design, cargo capacity, and safety. The viewer gains a clear understanding of how these dimensions impact ship operation and stability, offering a comprehensive look at ship construction and navigation principles.

Takeaways

• 😀 Draft (D) is the height of the ship from the baseline to the deck, determining how deeply the ship can submerge in the water.
• 😀 Beam (B) refers to the ship's width at its widest point, which is essential for determining the ship's stability.
• 😀 Waterline (WL) is the maximum level at which a ship can submerge into the water, indicating its current loading state.
• 😀 Freeboard is the distance between the waterline and the deck, ensuring the ship does not submerge too deeply and remains buoyant.
• 😀 Length Between Perpendiculars (LPP) is the measurement between the forward and after perpendiculars, excluding certain portions of the ship's length.
• 😀 Overall Length (LOA) measures the total length of the ship from the bow to the stern, providing the full size of the vessel.
• 😀 Midship refers to the central part of the ship, often used as a reference point for structural and operational calculations.
• 😀 Midsection is the cross-sectional area of the ship at its midpoint, reflecting internal structural features.
• 😀 Deadweight (DW) is the maximum weight a ship can safely carry, including cargo, fuel, and supplies.
• 😀 The keel (Kill) is the fundamental structural element of the ship, running from the bow to the stern, providing stability.

Q & A

What is the 'draft' of a ship?

The draft is the maximum depth a ship can be submerged in the water without exceeding safety limits. It is measured from the baseline (the lowest point of the ship) to the waterline.

What does the term 'beam' refer to in ship dimensions?

The beam refers to the width of the ship, measured from the right side (starboard) to the left side (port) at the widest point of the vessel, usually at the midship.

What is the 'waterline' on a ship?

The waterline is the line that marks the maximum level to which the ship can sink into the water, showing how much load it can carry without exceeding its stability limits.

How is 'freeboard' calculated on a ship?

Freeboard is the distance between the waterline and the highest point of the ship's deck. It is calculated by subtracting the draft from the total depth (also known as the 'deph' or 'height').

What is the significance of the 'forward perpendicular' (FP) and 'after perpendicular' (AP)?

The forward perpendicular (FP) is the vertical line at the front of the ship where the waterline intersects the hull. The after perpendicular (AP) is the vertical line at the rear, aligned with the ship’s rudder. These points help in measuring the length between perpendiculars (LPP).

What does the 'length overall' (LOA) refer to?

The length overall (LOA) is the total length of the ship from the very front (bow) to the very back (stern), without any consideration of the waterline or other intermediate lines.

What is the purpose of the 'centerline' (CL) on a ship?

The centerline is an imaginary vertical line that divides the ship into two equal halves, running from the bow to the stern, and is crucial for structural integrity and alignment.

What is the function of the 'keel' in ship construction?

The keel is the primary structural component of the ship, running from the front to the back along the bottom of the hull. It provides strength and stability to the vessel.

How does the 'midsection' differ from the 'midship'?

The midsection refers to the cross-sectional area of the ship at its midpoint, often measured at the midpoint of the length between perpendiculars (LPP), whereas 'midship' is the central area along the length of the ship.

What is the relationship between 'draft' and 'Plimsoll line'?

The Plimsoll line marks the maximum safe draft a ship can have, showing the vessel’s limit for submersion based on its cargo and water conditions. It ensures the ship remains afloat and stable under its loading conditions.