March 17, 2026

India's sovereign energy needs: Russia and Iran

Inspired by Gessler's March 14, 2026 comments on India's oil and gas prices, Pete has done some research on how India's energy needs relate to Russia and, to a lesser extent, Iran.

Says Gessler: "In India the petrol/diesel prices haven't moved up, largely because the Indian Government and oil companies had maintained a somewhat elevated price for motor fuels for a long time, regardless of the price of oil dropping in the international markets after previous disruptions like the Ukraine war. So the oil companies have been sitting on a cash surplus for years and don't mind burning through a bit of it now in order to stabilize the market."

[Pete Background: India imports 82% of its oil needs. India’s strategic petroleum reserves may be 87 days. https://en.wikipedia.org/wiki/Oil_and_gas_industry_in_India#Strategic_petroleum_reserves

India is the second biggest oil importer after China and is highly dependent on imported crude oil. https://en.wikipedia.org/wiki/Oil_and_gas_industry_in_India#Foreign_trade India is the third largest consumer of crude oil in the world, after the US and China. https://en.wikipedia.org/wiki/Oil_and_gas_industry_in_India#Consumption  https://en.wikipedia.org/wiki/Oil_and_gas_industry_in_India

India has significantly increased its Russian oil imports since the start of the Russian invasion of Ukraine due to deep discounts, making Russia a top supplier.[66][67] In 2025, several top US officials and political figures accused India of effectively financing Russia’s war in Ukraine by serving as a major buyer of Russian energy.[68][69] In late 2025, the US, EU, and UK significantly escalated sanctions against Russia's two largest oil producers, Rosneft and Lukoil, to curtail the financing of the war in Ukraine.[70] 

These measures have significantly disrupted India's oil trade, leading to a sharp decline in imports from these specific entities.[71]On 19 December 2025, Ukraine’s Security Service (SBU) conducted a first-of-its-kind long-range drone strike on a "shadow fleet" oil tanker in the Mediterranean Sea, targeting a vessel that had recently delivered oil to India.[72]

[But] On March 13, 2026, to help deal with the economic costs of the war, the US temporarily lifted restrictions on the sale of Russian oil. However, oil prices have barely been affected by this.

India’s top oil suppliers in 2024. by country, were https://en.wikipedia.org/wiki/Oil_and_gas_industry_in_India#Oil_imports_by_source_country  US$51.3 Billion from Russia, $28.6 Billion from Iraq, $19.3 Billion from Saudi Arabia, $13.7 Billion from the UAE, and $5 Billion from the US.

https://en.wikipedia.org/wiki/India%E2%80%93Russia_relations#Cooperation_in_the_energy_sector ]

Says Gessler: "The bigger problem here is liquid natural gas (LNG) and its derivatives liquid petroleum gas (LPG) and compressed natural gas (CNG) etc. Local production of natural gas only meets about 40% of India's requirement and most of the remainder used to come from the Persian Gulf. Now there's a gas shortage especially for commercial establishments as the Indian Government wants to prioritize domestic (cooking/heating) [a sensitive public issue] supply until shipments from other places (US, Russia) can come in."

[Pete Backgroundhttps://en.wikipedia.org/wiki/India%E2%80%93Russia_relations#Cooperation_in_the_energy_sector  In 2025 the US threatened or imposed secondary sanctions on India for buying Russian oil and gas,

https://en.wikipedia.org/wiki/International_North%E2%80%93South_Transport_Corridor the International North-South Transportation Corridor (INSTC) is already being used to transport Russian fuel, including gas and oil, to Iran and beyond by rail. The 7,200 km multi-modal network serves as a strategic, sanctions-resilient route for energy and commodities, connecting Russia to Iran and India via the Caspian Sea and central Asian rail links.

·         Active Shipments: Russian fuel, including gasoline and oil, has already been transported to Iran by rail along the eastern branch of the INSTC, with roughly 30,000 tons moved in early 2023.

·         Infrastructure Growth: Russia and Iran are constructing the 162-km Rasht-Astara railway to physically connect their rail networks and boost the corridor’s capacity.

·         Strategic Goal: The INSTC aims to reduce trade costs and times by 30-40%, bypassing traditional Western-controlled maritime routes.

·         Projected Growth: By 2030, the INSTC capacity is expected to carry up to 25 million tons of cargo annually, including major shipments of oil, gas, and fertilizers.

Slightly off topic: Around 2014 Russia agreed to build more than 20 nuclear reactors over the next 20 years in India. https://www.bbc.com/news/world-asia-india-30978152  The Russian president stated in an interview, "It contains plans to build over 20 nuclear power units in India, as well as cooperation in building Russia-designed nuclear power stations in third countries, in the joint extraction of natural uranium, production of nuclear fuel and waste elimination." 

Gazprom, the Russian company, and Gas Authority of India have collaborated in joint development of a block in the Bay of Bengal. Kudankulam Nuclear Power Project with two units of 1,000 MW each is a good example of Indian–Russian nuclear energy cooperation. Both sides have expressed interest in expanding cooperation in the energy sector. In December 2008, Russia and India signed an agreement to build civilian nuclear reactors in India during a visit by the Russian president, Dmitri Medvedev, to New Delhi.[110] ]

March 13, 2026

Japanese Submarine JS Chōgei Commissioned March 10, 2026

The Taigei-class submarine JS Chōgei "Long Whale" (see it in table below) was commissioned on March 10, 2026.

Japan uses a continuous build (1 new submarine per year) system. New classes (the Taigeis are the latest) are created every 10 years or so. 

Submarine production is shared between Kawasaki Heavy Industries (KHI) and Mitsubishi Heavy Industries (MHI) each building sections amounting a half hull equivalent each, each year. The hull sections are placed on rafts, then towed between the KHI and MHI shipyards. Both shipyards are at the Port of Kobe

There are gradual improvements (often in propulsion, snorkel, sensor and weapon systems) within Japanese submarine classes and between classes.

Also see SubMatt's Updated History & Photos of Japanese Submarines After WWII of January 17, 2015 at https://gentleseas.blogspot.com/2015/01/history-of-japanese-submarine-after-wwii.html It contains a vast amount of Japanese originated information on Japanese submarines. From the end of WWII (September 2, 1945) to June 30, 1960 Japan had no operational submarines. 

From December 1957 Japan restarted submarine production based on US experience (eg the US Gato class) and based on long institutional experience building advanced submarines for the former WWII 
Imperial Japanese Navy.

+++++++++++++++++++++++++++++

TABLE

This Table is unique to Submarine Matters mainly created by "S"/Anonymous and Pete.

Japan's Diesel-Electric Classes of Submarine (SSKs)

The 2nd Oyashio class, Soryus & Taigeis as at March 13, 2026. 

SS
No.
Diesel Type
Motor
Build No
Name
Pennant
No.
Ministry of Finance (MoF) approved
Ministry of
Defense Budget
in Billions of
Yen (¥B)
LABs +
AIP:
or LIBs
Laid Down
Laun
-ched
Comm
i
ssion
ed
Built
By
5SS + 6SS
now training

Oyashios
8105 +
8106 Oya
shio
¥52.2B FY1993
2 x 12V25/25S 
diesels for all
Oyashio class
(each diesel
2,000kW)
LABs only
1994 & 1995
1996 &
1997
Built
at
KHI
7SS-15SS
8 active Oyashios 
10 subs
SMC-7?
8107
-8115
various
SS-591-600
¥52.2B per sub
FY1994-FY2003
LABs only
 15SS Feb
2004
15SS
Nov
2006
15SS
Mar 2008
MHI
&
KHI
16SS
12
Active

Soryus/
Dragon
class  Mk I
8116
Sōryū
means
dragon
2,900 tonnes
surf-
aced
SS-501
¥60B FY2004 
Mk.1 LAB+AIP Soryus have 2 x Kawasaki 
+ a SMC-8 motor
LABs + AIP
Mar 2005
Dec 2007
Mar
2009
Built
at
MHI

Home
Port
Kure
17SS
8117
Unryū
SS-502
¥58.7B FY2005
LABs + AIP
Mar 2006
Oct 2008
Mar
2010
KHI
Kure
18SS
8118
Hakuryū
SS-503
¥56.2 FY2006
LABs + AIP
Feb 2007
Oct 2009
Mar
2011
MHI
Kure
19SS
8119
Kenryū
SS-504
¥53B FY2007
LABs + AIP
Mar 2008
Nov 2010
Mar
2012
KHI
Kure
20SS
8120
Zuiryū
SS-505
¥51B FY2008
LABs + AIP
Mar 2009
Oct 2011
Mar
2013
MHI
Yokosuka
21SS LIBs Concept
Research
Project
No 21SS built. It was an 8 year research project on LIBs. 1st LIBs sub launched was 27SS in 2018.
   


22SS
8121
Kokuryū
SS-506
¥52.8B FY2010
LABs + AIP
Jan 2011
Oct 2013
Mar
2015
KHI
Yokosuka
23SS
8122
Jinryu
SS-507
¥54.6B FY2011
LABs + AIP
Feb 2012
Oct 2014
7 Mar 2016
MHI
Kure
24SS
8123
Sekiryū
SS-508
¥54.7B FY2012
LABs + AIP
KHI
Kure
25SS
8124
SS-509
¥53.1B FY2013
LABs + AIP
22 Oct 2013
12 Oct   2016
MHI
Yokosuka
26SS
8125
SS-510
¥51.7B FY2014
last SMC-8 motor
LABs + AIP
2014
6 Nov 2017
KHI
Kure
27SS a Soryu
"Mk II" as it
has LIBs. 1st
Soryu
Mk II 
8126
Oryū
11th
Soryu
SS-511
¥64.4B FY2015 
with 2 12V25/25SB diesels (totaling 4,240kW) 
SMC-8B motor [Wispy+Anon
agree it has 640 LIB/SLH modules], other improvements
LIBs only
(SLH type)
Nov
2015
4 Oct
2018
2020
MHI
Kure
28SS Soryu
Mk II, 12th &
final Soryu
8127
SS-512
¥63.6B FY2016
"2,950t" surfaced
12V25/25SB 
diesels.
LIBs
Jan 2017
KHI
Yokosuka
29SS
1st
Taigei
Class

means
Whale
3,000 tonne
(surfaced)
8128
Taigei
"Big 
whale
"
Used as
test
sub. Not
opera-
tional
SS-513
¥76B FY2017 (Heisei 29)
Higher ¥76budget 
may be due to 1st of class many changes. 
2 x 12V25/25SB
says 640 LIB/SLH modules, Anon says 720.]
SLH
LIBs
maybe
960

14 Oct
2020
 
9 Mar 2022
MHI

Home
Port
Yokosuka
30SS 
2nd Taigei Class 
8129
Hakugei
"White
whale
"
First
opera-
tional
Taigei

SS-514
¥71.5B FY2018 
(Heisei 30)
says 640 LIB/SLH modules, Anon says 720.]
SLH
LIBs
KHI

Home
Port
Kure
Reiwa Era 01SS 
3rd
Taigei Class
8130
Jingei
"Swift
whale
"
SLH
LIBs
maybe
960+
8 Mar
2024
MHI
02SS 
4th
Taigei Class 
8131
Raigei
Thunder
whale
SS-516
Improved
 SLH
LIBs
26 Mar
2021
KHI
03SS
5th Taigei Class
SS-517
LIBs 
19 Apr
2022
10 Mar
2026
MHI
04SS
6th Taigei Class
SS-518
LIBs
28 Mar
2023
Mar? 
2027
KHI
05SS 
7th Taigei Class
8134
SS-519
LIBs
17 Apr 2024
2026
? Mar 2028
MHI
06SS
8th Taigei Class
8135
SS-520
LIBs 
19 Dec
2024
2027
2029
KHI
07SS 
9th Taigei Class
8136
SS-521
¥B116.1 FY2024  for 9th Taigei page 23 [1]
LIBs
2026
2028
2030
MHI
08SS 
10th Taigei Class
8137
SS-522
¥B120.8 "for 10th Taigei... for enhanced detection capabilities & manpower saving systems for effective intelligence & surveillance activities" page 27 [2]
LIBs
2027
20292031
KHI
Key to Table: Table information provided by S = Anonymous to Submarine MattersLABs = lead-acid batteries, AIP = air independent propulsion, LIBs = Lithium-ion Batteries. 
¥***B
 = Billion Yen. MHI = Mitsubishi Heavy Industries, KHI = Kawasaki Shipbuilding Corporation of Kawasaki Heavy Industries. 
---

[1] Japanese “Ministry of Defense: Progress and Budget in Fundamental Reinforcement of Defense Capabilities: Overview of the FY2025 Budget” page 23 
[2] Japanese “Ministry of Defense: Progress and Budget in Fundamental Reinforcement of Defense Capabilities: Overview of the FY2026 Budget” page 27

March 10, 2026

An Australian Wedgetail Aircraft & Missiles to Defend UAE

Announced today Australia is sending an E-7A Wedgetail early warning and control aircraft to the UAE by Friday 13th March 2026. A Wedgetail is based on a 737 platform, has a large radar and specialised crew of about 14 crew per watch/mission. The Wedgetail's radar is particularly useful for spotting low flying Iranian drones and cruise missiles. In all about 85 RAAF personnel are going to the UAE.

Australia has around 100 tri-service Australian Defence Force personnel at Joint Task Force 633 with vague "command and control" functions at Al Minhad Air Base. The base remains operational despite being targeted by an Iranian drone strike on March 1, 2026. Australia’s air force also uses Qatar’s Al Udeid Air Base, alongside the UK and US.  

The Wedgetail activity is integrated with the second aspect of Australia's assistance to the UAE which is probably initially sending around 100 AIM-120 Advanced Medium-Range Air-to-Air Missiles (AMRAAM). These will likely be air-freighted with their heavy radar and coordination components to the UAE by RAAF C-17 cargo aircraft. With an average system cost to Australia of perhaps A$4.5 million each, the AMRAAMs may be launched by jets of the UAE. Also some AMRAAMs will be in ground launched NASAMS batteries. 

For defence of Australia the RAAF appears to have budgeted for 400-535 AMRAAMs, for Australia's own defence,, tops. These limited stocks may be vey uneconomic if tasked to shoot down much cheaper Iranian drones and cruise missiles fired at the UAE over a very short period. Iran is firing 10s of missiles and 100s of drones over the Middle East daily. 

Unfortunately AMRAAMs may currently have difficulty shooting down expensive Iranian ballistic missiles. Maybe US Patriots and other ABMs will do/are doing those jobs.