Named ship cups page 5
Lacquered wood cup with gold gilt  Imperial Paulonia Leaves. This is a
named warship cup, from the battleship Fuso. The inscription on the
reverse reads, 'Showa 9 [1934] On the occasion of the Honorable
Prince Takamatsu Boarding the Battleship Fuso Commemorative'.
Prince Takamatsu was a younger brother of emperor Hirohito, and he
was in the Imperial navy. According to
the Wikipedia entry, he also
served on the Fuso twice.
Named Navy warship cup. The hand-painted design in the bowl is an
impressive dragon spewing gold fire. Inscribed 'Tenryu [literally "Heaven
Dragon"] Launching Commemorative'.
Read more about this cruiser here:
TENRYU.

This ship was launched on March 11, 1918, so this cup can be dated quite
easily. She had a long career and saw considerable action in WW2, finally
being sunk in 1942 near New Guinea.
Inscribed 'Conquer Germany Commemorative, Yakumo, Takahashi'.
Warship Takasago
Note the White Ensign British Naval flag. This cup commemorates
the enthronement of Edward VII in 1900. The Takasago was sent
to England then as a representative of Japan, and also to show
the world Japan's naval power.

Warship Nagato (cup dated 1928)
The mighty Nagato, which came to such an inglorious
end as a target for an atomic bomb test in 1947
Warship Tsushima
Lacquered wood named ship tray. This ship is the Shasuimaru or
perhaps pronounced Isuimaru, a merchant steamship that was
attached to the IJN.

Sunk on June 12, 1944 after leaving Saipan and heading back to
Yokohama. 67 crewmen died. It was sunk in the Mariana Islands, near
Alamagan Island.

The boat on the tray is merely a design, not a realistic depiction of teh
actual ship. You can see a more realistic representation to the right.

Inscribed 'Shasuimaru, Put into Service Commemorative, NihonKai
Steamship Corporation.'
A rare named warship bottle.
Inscribed 'Warship Hirado, [Patrol of ] Russian Coast, Dispatch
Commemorative, Tateyama.'

The Hirado saw most of her action in WW1. Right after the war she
patrolled the Russian coast, so this bottle can be dated to that short
time frame.

Read more about the Hirado here:
CRUISER HIRADO.
Pure silver (stamped jungin) named warship
cup. Very rare to find one of these silver cups
named to a ship. It weighs about 40 grams.
Inscribed 'Showa 7 [1932] China Incident
Commemorative, Warship Nachi.'

You can read more about this WW2 ship here:
CRUISER NACHI.
Although the English page makes no mention of
her earlier service, the Japanese page
mentions that the Nachi did patrols during the
Shanghai Incident (1932) and her crew also
participated in ground attacks on Shanghai in
1937.
Lacquered wood cup with a gold gilt map of the world (most of it, anyway) and the route taken by the armored cruiser Nisshin.
The places it appears to have gone on this voyage are Esquimalt, BC (Canada), Yokosuka, Maizuru, Urajio (the Japanese name
for Vladivostok, Russia), and a place in Japan that I cannot read.

Other counties and cities are also labeled.

Inscribed 'Sea Voyage Number of Days: 38. Nautical Miles: 9969'.  

On the reverse: 'Taisho 5 [1916] Special Fleet, Warship Nisshin, [??] Club, Long Voyage Commemorative, Sugahara.'

WIKIPEDIA ARTICLE ON THE NISSHIN.

Note that the famous Isoroku Yamamoto served aboard this vessel at the Battle of Tsushima, but in 1916 I don't think he was
on this ship.
Cups shaped like sailor caps.

Inscribed 'Imperial Japan, Warship Mikasa'.

Inscribed 'Warship Kirishima'.
Inscribed 'Warship Asama, Long Sea Voyage Commemorative, Takeda.'
Lacquered wood cup with gold gilt battle flag and IJN flag.
This is a named ship cup, the cruiser Tsushima.
Inscribed 'Warship Tsushima, Taisho 4 [1915] Imperial Coronation
Welcoming Warship Ceremony Commemorative'.

See the Wikipedia article on this ship here:
TSUSHIMA.
Lacquered wood named warship cup.
The gold gilt design has the IJN anchor and blossom along with two
measuring sticks.

There were two ships in the Imperial Japanese Navy named 'Tone.' The
style of the cup suggests that this belonged to a sailor on the earlier
vessel.

Here are the links to the Wikipedia articles on these ships.

HEAVY CRUISER TONE
PROTECTED CRUISER TONE

Inscribed on the reverse 'Warship Tone, From All in the Matsunaru Unit,
Gift to Nagao'.
The design is really nice: An English white ensign Navy flag The
design is really nice: An English white ensign Navy flag
(upside-down) and a Japanese battle flag. Between these you can
see an Imperial mum and a propeller.
see an Imperial mum and a propeller.

Inscribed 'His Majesty the Crown Prince, Trip to Europe
Commemorative, Aboard the Honorable Warship Katori'.  On the
base is a personal name: Hasegawa.

This trip was in 1922.