MT101P Lecture

LOADLINES 11 : 

LOADLINES 11

Loadlines : 

Loadlines

Loadlines : 

Loadlines

Slide 4: 

LTF = Tropical Fresh Water Timber Loadline LF = Fresh Water Timber Loadline LT = Tropical Timber Loadline LS = Summer Timber Loadline LW = Winter Timber Loadline LWNA = Winter North Atlantic Timber Loadline

Slide 5: 

TF = Tropical Fresh water Loadline F = Fresh Water Loadline T = Tropical Loadline S = Summer Loadline W = Winter Loadline WNA = Winter North Atlantic Loadline

Slide 6: 

The Maximum depth to which a ship may be loaded in relation to a Timber load shall be the depth indicated by the upper edge of the appropriate Timber Loadline (Q) What is the purpose of the Summer/winter loadline on a Merchant Navy vessel?

Slide 7: 

(a) For the safety of the crew also, the density of water changes from port to port all around the world, some ports have fresh water coming from rivers, you need to know the density of the water in the harbour using a hydrometer. (Fresh water is 1.000t per metre cubed and sea water is 1.025t per metre cubed)

Slide 8: 

Remember salt water makes your vessel more buoyant, but coming form salt water to fresh water, your vessel is going to sink because fresh water is less buoyant.

Slide 10: 

The Plimsoll Line was painted on the side of merchant ships. When a ship was loaded, the water level was not to go above the line. However, the water could reach different parts of the line (see drawing) as its temperature and saltiness varied with season and location.

Slide 11: 

The basic symbol, of a circle with a horizontal line passing through its centre, is now recognized worldwide.

Slide 12: 

The loadline and Plimsoll marks are placed amidships on both sides of the hull of a vessel to denote the maximum mean draft to which a vessel may be lawfully submerged for a particular voyage, depending on the area to be traveled and the season of the year.

Slide 13: 

Figure 7-2.   Loadline marks. Loadline marks.

Slide 14: 

Loadline markings are used with the Plimsoll mark to indicate the maximum permissible draft of the ship (maximum mean draft to which a vessel may be lawfully submerged for a particular voyage )in different circumstances and seasons.

Slide 15: 

(a) The summer loadline is indicated by the upper edge of line marked S. (b) The winter loadline is indicated by the upper edge of line marked W. (c) The winter North Atlantic loadline is indicated by the upper edge of a line marked WNA (d) The tropical loadline is indicated by the upper edge of a line marked

Slide 16: 

(e) The freshwater loadline in summer is marked by the upper edge of a line marked F.   The difference between the freshwater loadline in summer and the summer loadline is the allowance made for loading in freshwater at the other loadlines.

Slide 17: 

The tropical freshwater loadline is indicated by the upper edge of a line marked TF.   Main deckline. The main deckline mark is a line 12 inches long and 1 inch wide located on each side of the hull amidships directly opposite the main deck plating and directly over the loadline.

Slide 18: 

SHIP MEASUREMENT

Slide 19: 

Length Length overall · Length between perpendiculars · Length at the waterline Breadth Beam

Slide 20: 

Depth Draft · Moulded depth · Freeboard · Waterline (Plimsoll Line) Volume Worldwide : Tonnage · Gross tonnage · Net tonnage Specialized: Panama Canal/Universal Measurement  Archaic: Gross Register Tonnage · Net register tonnage

Slide 21: 

Capacity Deadweight tonnage · Twenty-foot equivalent unit Weight Displacement · Loaded Displacement · Standard Displacement · Light Displacement · Normal displacement

Slide 22: 

Stability Inclining test · List · Angle of loll · Metacentric height (GM) Limits Aframax · Capesize · Chinamax · Handymax/Supramax · Handysize · Malaccamax · Panamax and New Panamax · Seawaymax · Suezmax · VLCC and ULCC

Length Overall : 

Length Overall Length Overall abbreviated as (LOA, o/a, o.a. or oa) refers to the maximum length of a vessel from the two points on the hull measured perpendicular to the waterline. Used to indicate maximum length of a vessel.

Slide 25: 

p/p = length between perpendiculars w/l = length at waterline o/a = length overall b = beam f = freeboard d = draft

Length Between Perpendiculars : 

Length Between Perpendiculars Length between perpendiculars, (a.k.a. p/p, p.p., pp, LPP, LBP or Length BPP is a term describing the length of a ship. LBP refers to the length of a vessel along the waterline from the forward surface of the stem, or main bow perpendicular member, to the after surface of the sternpost, or main stern perpendicular member.

Slide 28: 

Moulded Breadth The transverse distance between the moulded or inboard surfaces of the side shell plating measured at the widest portion of a ship's hull; used in calculations

Slide 29: 

Extreme Breadth The transverse distance extending from the most outboard point on one side to the most outboard point on the other side of a ship's hull including any projections on the ship's side; this dimension determines the maximum space occupied by the ship when used with length overall