PERHITUNGAN JANGKAR | | | | |
| | | | | | |
Z = | D⅔ + 2 x h x B + (A / 10) | | | |
| | | | | | |
| D = | Displacement kapal | | | |
| = | Lwl x B x T x Cb x 1.025 | | |
| = | 85,488 x 13.3 x5.38 x 0.75 x 1.025 | |
| = | 4702,4502 | | | | |
| | | | | | |
| h = | Tinggi dari garis sarat ke geladak teratas | |
| | | | | | |
| h = | a + ∑ h` | | | | |
| | | | | | |
| | a = | Tinggi freeboard | | |
| | = | 6,2-5,38 | | | |
| | = | 0,82 | | | |
| | | | | | |
| | ∑ h` = | Tinggi total dari superstructure sampai deckhouse |
| | = | 2.0x 4 | | | |
| | = | 8 | | | |
| | | | | | |
| h = | 0,82+ 8 | | | | |
| = | 8,82 | | | | |
| | | | | | |
| A = | Luas penampang samping lambung kapal super structure dan deck house |
| | | | | | |
| Lambung kapal = | (H-T) x panjang | | | |
| = | (6.2-5,38) x 85,488 | | | |
| = | 70,100 | | | | |
| | | | | | |
| | 1/2 alas x tinggi | | | |
| Luasan 2 = | 1/2 x 0.59 x 1.294 | | | |
| = | 0,382 | | | | |
| | | | | | |
| | 1/2 alas x tinggi | | | |
| Luasan 3 = | 1/2 x1.397x1.344 | | | |
| = | 0,939 | | | | |
| | | | | | |
| Total luasan = | 71,421 | | | | |
| | | | | | |
| Forecastle = | 6.939 x 2.0 | | | | |
| = | 13,878 | | | | |
| | | | | | |
| main deck = | 18.972x 2.0 | | | | |
| = | 37,944 | | | | |
| | | | | | |
| Poop deck = | 15.662 x 2.0 | | | |
| = | 31,324 | | | | |
| | | | | | |
| Boat deck = | 10.800 x 2.0 | | | |
| = | 21,6 | | | | |
| | | | | | |
| Navigation deck = | 7.25x 2.0 | | | | |
| = | 14,5 | | | | |
| | Lambung Kapal +Luasan 2+Luasan 3+ Forecastle+Main Deck+Poop deck+Boat Deck+nav Deck |
| A = | 190,667 | | | | |
| = | | | | | |
| Z = | 3937.2815⅔ + 2 x 9.16 x 13.03 + (208.373/10) |
| Z = | 529,599 | | | | |
| | | | | | |
| | | | | | |
Dari nilai Z, didapat karakteristik peralatan jangkar berdasarkan pada BKI 1997 section 18 tabel 18.2 |
Untuk nilai Z = 508.89, nilai tersebut termasuk dalam range = 500~550 diperoleh data peralatan jangkar sebagai berikut : |
| | | | | | |
| | | Jumlah jangkar Bower = | 3 buah (1 cadangan) |
| | | Type jangkar = | Stockless anchor | |
| | | Berat jangkar haluan = | 1590per jangkar | |
| | | Rantai jangkar : | | | |
| | | Type = | Stud link chain cables |
| | | Panjang = | 412,5 | | |
| | | Diameter = | | | |
| | | d1 = | 40 | | |
| | | d2 = | 34 | | |
| | | d3 = | 30 | | |
| | | Mooring ropes : | | | |
| | | Jumlah = | 4 | | |
| | | Panjang = | 160 | | |
| | | Beban putus = | 120 | | |
| | | | | | |
| | | tow line : | | | |
| | | panjang = | 190 | | |
| | | beban putus = | 305 | | |
Volume Chain locker | | | | | |
| | | | | | |
| V = |
| | | | |
| | 183 | | | | |
| L = | Panjang rantai jangkar | | | |
| = | 412,5 | | | | |
| | | | | | |
| d = | Diameter rantai jangkar | | |
| = | 34 mm / 25.4 | | | |
| = | 1,339 | | | | |
| | | | | | |
| V = |
| | | | |
| | 183 | | | | |
| | | | | | |
| = | 4,04 | | | | |
| | | m³ | | | |
| Penambahan volume untuk cadangan sebesar 37.5 % maka menjadi : |
| = | 4.04 m ³ + (4.04 x 0.375) | | |
| = | 5,55 | | | | |
| | | m³ | | | |
| direncanakan ada 1 buah chain locker dengan ukuran sebagai berikut : |
| = | LxBxH | | | | |
| = | 5,63 | | | | |
| | | m³ | | | |
| Volume mud box | | | | |
| = | LxBxH | | | | |
| = | 1,1250 | | | | |
| | | m³ | | | |
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