- Jamaica -
HMS Jamaica - Rick
2.5 units, 22 seconds, British Light Cruiser, Launched
1940
The Jamaica (Figi-class) is a highly respected cruiser
within our hobby. Conventionally set up with two twin 50 round stern guns and a
½ unit pump, this 22 second ship is light and will accelerate well. As with all
of the class 2 cruisers turning can be challenging however, Rick gets this
thing to turn very well. It’s step deck allows for low to the water stern guns.
Given that it is relatively light and low to the water, it can be unforgiving
in terms of general survivability and ease of building, I would consider it a
somewhat advanced build but in general is a great cruiser and can be good for
advanced beginners as well. These pictures are from the fall of 2023, Rick has
made various upgrades to this ship as he has battled it over the years. You may
spot several weight saving techniques in this build.
The bow of the ship is fairly empty, many captains
will not make the most forward deck removable. He has the CO2 bottle under the
forward step section. You can see the radio receiver (waterproofed) under the
cross brace. The bow most turret is a float that will detach if he sinks
allowing him to find the ship. With an average score of 0-0-0, he doesn’t sink
often. There is some lead next to the bottle.
The battery
sits in a tray he made, the Lithium Polymer batteries are very light, this is
8Ah. You can see additional lead behind the battery. The solenoids are next followed by the pump
then drive motors. Direct drive with dog bone (dumas) is one of the most common
and reliable ways to drive the props on a cruiser. The gun magazines load with
the stern most section of deck left in place. The gray internal armor is shower
pan liner.
The stern turret in this ship is fairly far back, this
makes trimming the height of the guns and angle of depression if desired easy
as you don’t have much deck to clear, but the underside of the guns themselves
can get in the way of the rudder equipment.
Rick has various latches and screws to keep the deck
down. His barrel holders are a bit bulky but highly functional. It seems like
they are easy to ignore aesthetically when the top side is painted in camo.
The rudder is driven via chain by a water proof servo.
ESC for motor control sits in the stern as well. I prefer direct gear-to-tear
mesh over chain drive. The black foam is to displace water forward towards the
pump. His guns have a high flow feed in, it can be tricky to get the larger
hose to feed into the bottom of the nut laterally like this without destroying
the threads but it does save space compared to feeding it vertically into the
direct bottom of the nut. His deck has some foam to act as a water seal, you
can see the insets for his deck screws within the subdeck.
Measurements.
Measurements.
CO2 bottle, two
1/8 inch hoses go to the solenoids from just off regulator. Receiver is under
the cross brace.
CO2 bottle holder sits in a shallow water channel.
There is lead on either side of the bottle.
Rudder and prop locations.