在国际航运界，BDI指数就像纳斯达克指数、道琼斯指数一样，被人们称之为经济的晴雨表。

　　该指数由伦敦波罗的海航运交易所发布。而波罗的海航交所则是世界上历史最悠久的航运市场。1744年，它诞生于英国佛吉尼亚波罗的海咖啡屋，目前交易所则设在英国伦敦。经过260多年的发展，波罗的海航交所已经成为最著名的国际性海运、船舶买卖市场。当前全球46个国家和地区的656家公司都是波罗的海航交所的会员，大约有2000多名员工代表公司在交易所里进行各项交易。

　　BDI是干散货综合指数，其中好望角型、巴拿马型、大灵便型和小灵便型市场各占1/4权重，它是反映干散货市场的总体趋势。但对具体某一船型，某一航线，BDI的参考意义是有限的。波罗的海交易所，每日发布BDI外，还发布不同船型的典型航线日租金水平，对具体的某个货载，它更有针对性。

例如，国内某电厂，要求对澳大利亚GLADSTONE港至中国北仑港，70,000MT（10%增减由船东选择）电煤报海运价，装卸时间包干7天。如何报？保本的运费计算为：

运费收入 = 营运成本

即：

运价 X 货量 = 日租金 X 航次总天数 + 燃油费 + 港使费 （*）

其中

（1）波罗的海标准巴拿马型船舶规范，载重吨为74000MT，除去油、水和常数，可装载货量约为72000MT

（2）波罗的海7月13日发布的巴拿马型船太平洋往返航线日租金为USD 18667/天

（3）航次总天数为 航行天 加 在港天（7天）。航行天可以用以下公式求得：
（北仑港-GLADSTONE港-北仑港）总里程/巴拿马型散货船航速
假定航次总天数经计算为35天

（4）根据船舶耗油规范，求得航次总耗油量，乘以加油港（北仑港）油价，可以求得航次总耗油费用，假定为USD 500,000

（5）港使费，经向代理公司咨询，GLADSTONE港为USD 60,000，北仑港为 USD 45，000

那么公式（*）为：

运价 X 72000MT = USD 18667/天 X 35天 + USD 500,000 + USD 105,000

求得：

运价 = USD 17.47/MT

这样，考虑到预留利润，你可以向该电厂报价USD 18.00/MT，这应该是和当前市场水平比较接近的。也可以考虑市场近期的上升，和下跌趋势，采用不同的报价策略。

以上是较粗略的估计，实践中还有很多变数。例如港口压港情况，滞期费的高低，台风多发季节对船期的影响，油价的涨跌趋势，市场租金的涨跌趋势，该航线是否有冰区、战区等保险费用，等等。总之，资料掌握的越充分，计算就越准确，可以在保证航次收益的前提下，报出最有竞争力的价格。

例如，国内的连云港似乎还在收取速遣费QDA（约RMB1.0/MT），其他港口基本不收取。如果该航次是连云港卸货，计算时应该多考虑增加成本RMB 72000 元，计入运价。

以下为一实例:

Daily Summary of Baltic Exchange Dry Indices                            
                                
13 July 2009                            
                                
Baltic Exchange Dry Index TM    2975    (DOWN 10)              
                                
Baltic Exchange Capesize Index TM       4788    (DOWN 56)              
Baltic Exchange Panamax Index TM        2955    (UP 3)          
Baltic Exchange Supramax Index TM       1834    (UP 17)        
Baltic Exchange Handysize Index TM      800     (UP 6)          
                                
BCI                            
Average of the T/C routes       $50594  (DOWN 629)              
BPI                            
Average of the T/C routes       $23639  (UP 24)        
BSI                            
Average of the T/C routes       $19174  (UP 172)                
BHSI                            
Average of the T/C routes       $11473  (UP 86)        
                                
Baltic Exchange Capesize Index 4788 (DOWN 56)                          
C2      160000lt Tubarao -Rotterdam              10     17.941  -0.127
C3      160000mt Tubarao - Qingdao               15     31.313  0.100
C4      150000mt Richards Bay - Rotterdam         5     14.432  -0.159
C5      160000mt W Australia - Qingdao           15     12.886  -0.296
C7      150000mt Bolivar - Rotterdam              5     18.845  -0.150
C8_03   172000mt Gib/Hamburg trans Atlantic RV   10     57955   -454
C9_03   172000mt Continent/Med trip Far East      5     71500   -308
C10_03  172000mt Pacific RV                      20     45046   -1208
C11_03  172000mt China/Japan trip Med/Cont        5     27875   -546
C12     150000mt Gladstone - Rotterdam           10     22.260  -0.195
Average of the T/C Routes                               50594   -629
                                
Baltic Exchange Panamax Index 2955 (UP 3)                              
P1A_03  74000mt Transatlantic RV                 25     30135   220
P2A_03  74000mt SKAW-GIB/FAR EAST                25     35583   112
P3A_03  74000mt Japan-SK/Pacific/RV              25     18667   -131
P4_03   74000mt FAR EAST/NOPAC-AUST/SK-PASS      25     10170   -105
Average of the T/C Routes                               23639   24
                                
Baltic Exchange Supramax Index 1834 (UP 17)                            
S1A     Antwerp - Skaw Trip Far East            12.5    30911   322
S1B     Canakkale Trip Far East                 12.5    30475   120
S2      Japan - SK / NOPAC or Australia rv      25      14704   114
S3      Japan - SK Trip Gib - Skaw range        25      7833    107
S4A     US Gulf - Skaw-Passero                  12.5    32736   342
S4B     Skaw-Passero - US Gulf                  12.5    14194   150
S5      W.Africa via ECSA to FarEast             0      27383   277
S6      Jpn-SK trip via Aus/India                0      14300   35
S7      EC India - China                         0      20572   239
Average of the T/C Routes                               19174   172
                                
Baltic Exchange Handysize Index 800 (UP 6)                              
HS1     Skaw-Pass trip Recalada - Rio de Jan    12.5    10193   93
HS2     Skaw - Pass trip Boston – Galveston     12.5    10129   115
HS3     Recalada – Rio de Jan trip Skaw–Pass    12.5    14033   66
HS4     USG trip via USG or NCSA to Skaw–Pass   12.5    19294   94
HS5     SE Asia trip via Australia to Sing–Jpn  25      9869    69
HS6     S Korea – Japan via NOPAC to Sing-Jpn   25      9200    93
Average of the T/C Routes                               11473   86
                                
TIMECHARTER
'Christina' 2007 77073 dwt  dely Xingang 12/15 July  trip via EC Australia
redel Taiwan $19000 daily - China Steel Express - <recent>
'Nordmosel' 2001 75257 dwt  dely Sines 17/20 July  trip via Prodeco redel Le
Havre $32500 daily - Cetragpa
'Renuar' 1993 70516 dwt  dely retro PMO 4 July  trip via EC South America redel
Far East $26000 daily - cnr
'Aristides N.P.' 1993 69268 dwt  dely Chiba spot  trip via NoPac redel S.Korea
$18000 daily - Alfred C.Toepfer
'Darya Bhakti' 2005 56045 dwt  dely Kandla 13/14 July  trip redel China approx
$22250 daily - cnr
'Lake Dynasty' 2009 55650 dwt  dely Japan 16/18 July  trip via East Coast
Australia redel South Korea approx $17000 daily - cnr
'City' 2007 53352 dwt  dely Chennai 14/16 July  trip redel China approx $20000
daily - Seawin - <adds charterer to report 10/07>
'Emperor' 1986 38870 dwt  dely passing Canakkale 9/12 July  trip redel Nigeria
intention bulk cement $13750 daily - Nom (UK) Ltd
'Bright Ocean 2' 1999 32128 dwt  dely Ho Chi Minh 13 July trip via Australia
redel Singapore-Japan rge $10000 daily - Armada
'Hanjin Penang' 1997 27364 dwt  dely Singapore spot trip via Australia redel
Taiwan approx $8500 daily - cnr
PERIOD
'COS Intrepid' 2001 74119 dwt  dely Thailand 30 July/5 Aug 4/6 months trading
redel worldwide $20000 daily - Farenco
'Shi Dai 3' 1994 69659 dwt  dely Far East end July 4/6 months trading redel
worldwide $18000 daily - cnr
'Bao Wealth' 2009 57000 dwt  dely ex yard Zhenjiang August 09 12 months trading
redel worldwide $17000 daily - Chinese charterer
'Aston Trader 2' Rizzo Bottiglieri De Carlini Armatores relet 2008 55456 dwt  
dely Xingang 8/11 July 11/13 months trading redel worldwide approx $16800 daily
- Eastern Ocean - <replaces report of 30/06>
'Crown Princess' 2005 52347 dwt  dely Otranto prompt 2/4 months trading redel
Atlantic $19750 daily - cnr
ORE
'TBN' 160000/10 Sepetiba/Qingdao 10/20 Aug $32.00 fio scale/30000sc - RGL
'Cosco Hong Kong TBN' 160000/10 Esperance/Qingdao 24 July/2 Aug approx $17.00
fio scale/30000sc - Sinoeast
COAL
'TBN'  Norfolk/Iskenderun    - <reported 10/07 the charterer is Cerraghil not
Sigma>